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Dewey Decimal Classification (DDC) summaries

A brief introduction to the Dewey Decimal Classification system

Links to contents
Introduction

[History and Current Use] [Development] [Editions] [Structure and Notation] [Hierarchy]
[Arrangement - Volume 1 - Volume 2 - Volume 3 - Volume 4 ]

[Entries] [Number Building] [More Information]
Summaries

[First Summary - Main Classes] [Second Summary - Hundred Divisions]
[Third Summary - Thousand Sections]

[100] [200] [300] [400] [500] [600] [700] [800] [900]

History and Current Use

The Dewey Decimal Classification (DDC) system is a general knowledge organization tool that is continuously revised to keep pace with knowledge. The system was conceived by Melvil Dewey in 1873 and first published in 1876. The DDC is published by OCLC Online Computer Library Center, Inc. OCLC owns all copyright rights in the Dewey Decimal Classification, and licenses the system for a variety of uses.

The DDC is the most widely used classification system in the world. Libraries in more than 140 countries use the DDC to organize and provide access to their collections, and DDC numbers are featured in the national bibliographies of more than 60 countries. Libraries of every type apply Dewey numbers on a daily basis and share these numbers through a variety of means (including WorldCat, the OCLC Online Union Catalog). Dewey is also used for other purposes, e.g., as a browsing mechanism for resources on the web.

The DDC has been translated into over thirty languages. Translations of the latest edition of the DDC are completed, planned, or underway in Arabic, French, German, Italian, Norwegian, Spanish, Swedish, and Vietnamese.

Development

One of Dewey’s great strengths is that the system is developed and maintained in a national bibliographic agency, the Library of Congress. The Dewey editorial office is located in the Decimal Classification Division of the Library of Congress, where classification specialists annually assign tens of thousands of DDC numbers to records for works cataloged by the Library. Having the editorial office within the CIP and Dewey Section enables the editors to detect trends in the literature that must be incorporated into the Classification. The editors prepare proposed schedule revisions and expansions, and forward the proposals to the Decimal Classification Editorial Policy Committee (EPC) for review and recommended action.

EPC is a ten-member international board whose main function is to advise the editors and OCLC on matters relating to changes, innovations, and the general development of the Classification. EPC represents the interests of DDC users; its members come from national, public, special, and academic libraries, and from library schools.

Editions

The DDC is published in full and abridged editions in print and web accessible versions. The abridged edition is a logical truncation of the notational and structural hierarchy of the corresponding full edition on which it is based, and is intended for general collections of 20,000 titles or less. WebDewey, the electronic version of the classification is updated frequently and contain additional index entries and mapped vocabulary. Currently, the Abridged 15 edition is available to WebDewey subscribers in pdf form. Abridged numbers are indicated with segmentation marked. The electronic version and supplemental web postings are the chief sources of ongoing updates to the DDC. On the Dewey website, selected new numbers and changes to the DDC are posted regularly.

Structure and Notation

The DDC is built on sound principles that make it ideal as a general knowledge organization tool: meaningful notation in universally recognized Arabic numerals, well-defined categories, well-developed hierarchies, and a rich network of relationships among topics. In the DDC, basic classes are organized by disciplines or fields of study. At the broadest level, the DDC is divided into ten main classes, which together cover the entire world of knowledge. Each main class is further divided into ten divisions, and each division into ten sections (not all the numbers for the divisions and sections have been used). The main structure of the DDC is presented in the DDC Summaries following this introduction. The headings associated with the numbers in the summaries have been edited for browsing purposes, and do not necessarily match the complete headings found in the schedules.

The first summary contains the ten main classes. The first digit in each three-digit number represents the main class. For example, 600 represents technology.

The second summary contains the hundred divisions. The second digit in each three-digit number indicates the division. For example, 600 is used for general works on technology, 610 for medicine and health, 620 for engineering, 630 for agriculture.

The third summary contains the thousand sections. The third digit in each three-digit number indicates the section. Thus, 610 is used for general works on medicine and health, 611 for human anatomy, 612 for human physiology, 613 for personal health and safety.

Arabic numerals are used to represent each class in the DDC. A decimal point follows the third digit in a class number, after which division by ten continues to the specific degree of classification needed.

A subject may appear in more than one discipline. For example, “clothing” has aspects that fall under several disciplines. The psychological influence of clothing belongs in 155.95 as part of the discipline of psychology; customs associated with clothing belong in 391 as part of the discipline of customs; and clothing in the sense of fashion design belongs in 746.92 as part of the discipline of the arts.

Hierarchy

Hierarchy in the DDC is expressed through structure and notation. Structural hierarchy means that all topics (aside from the ten main classes) are part of all the broader topics above them. Any note regarding the nature of a class holds true for all the subordinate classes, including logically subordinate topics classed at coordinate numbers.

Notational hierarchy is expressed by length of notation. Numbers at any given level are usually subordinate to a class whose notation is one digit shorter; coordinate with a class whose notation has the same number of significant digits; and superordinate to a class with numbers one or more digits longer. The underlined digits in the following example demonstrate this notational hierarchy:

600    Technology
630      Agriculture and related technologies
636       Animal husbandry
636.7        Dogs
636.8        Cats

"Dogs" and "Cats" are more specific than (i.e., are subordinate to) “Animal husbandry”; they are equally specific as (i.e., are coordinate with) each other; and “Animal husbandry” is less specific than (i.e., is superordinate to) “Dogs” and “Cats.”

Sometimes, other devices must be used to express the hierarchy when it is not possible or desirable to do so through the notation. Special headings, notes, and entries indicate relationships among topics that violate notational hierarchy.

Arrangement of the DDC

The print version of the latest full edition of the DDC, Edition 23, is composed of the following major parts in four volumes:

Volume 1

(A) Introduction: A description of the DDC and how to use it
(B) Glossary: Short definitions of terms used in the DDC
(C) Index to the Introduction and Glossary
(D) Manual: A guide to the use of the DDC that is made up primarily of extended discussions of problem areas in the application of the DDC. Information in the Manual is arranged by the numbers in the tables and schedules
(E) Tables: Six numbered tables of notation that can be added to class numbers to provide greater specificity

Volume 2

(F) Schedules: The organization of knowledge from 000–599

Volume 3

(G) Schedules: The organization of knowledge from 600–999

Volume 4

(H) Relative Index: An alphabetical list of subjects with the disciplines in which they are treated subarranged alphabetically under each entry

Entries

Entries in the schedules and tables are composed of a DDC number in the number column (the column at the left margin), a heading describing the class that the number represents, and often one or more notes. All entries (numbers, headings, and notes) should be read in the context of the hierarchy.

In the print version of the DDC, the first three digits of schedule numbers (main classes, divisions, sections) appear only once in the number column, when first used. They are repeated at the top of each page where their subdivisions continue. Subordinate numbers appear in the number column, beginning with a decimal point, with the initial three digits understood.

Some numbers in the schedules and tables are enclosed in parentheses or square brackets. Numbers and notes in parentheses provide options to standard practice. Numbers in square brackets represent topics that have been relocated or discontinued, or are unassigned. Square brackets are also used for standard subdivision concepts that are represented in another location. Numbers in square brackets are never used.

Number Building

Only a fraction of potential DDC numbers are included in the schedules. It is often necessary to build or synthesize a number that is not specifically listed in the schedules. Such built numbers allow for greater depth of content analysis. There are four sources of notation for building numbers: (A) Table 1 Standard Subdivisions; (B) Tables 2–6; (C) other parts of the schedules; and (D) add tables in the schedules.

Number building is initiated only upon instructions in the schedules (except for the addition of standard subdivisions, which may take place anywhere unless there is an instruction to the contrary). Number building begins with a base number (always stated in the instruction note) to which another number is added.

More Information

The Dewey website contains up-to-date information about the DDC, DDC products and services, and DDC licensing. For more information about the structure and application of the Dewey Decimal Classification, consult the Introduction. A more in-depth introduction to the Dewey Decimal Classification may be found on the Dewey Teaching Site at http://oc.lc/deweyteachingsite.

DDC 23 Summaries

First Summary

Main Classes

000 Computer science, information & general works
100 Philosophy & psychology
200 Religion
300 Social sciences
400 Language
500 Science
600 Technology
700 Arts & recreation
800 Literature
900 History & geography

Second Summary

Hundred Divisions

000 Computer science, knowledge & systems
010 Bibliographies
020 Library & information sciences
030 Encyclopedias & books of facts
040 [Unassigned]
050 Magazines, journals & serials
060 Associations, organizations & museums
070 News media, journalism & publishing
080 Quotations
090 Manuscripts & rare books
100 Philosophy
110 Metaphysics
120 Epistemology
130 Parapsychology & occultism
140 Philosophical schools of thought
150 Psychology
160 Philosophical logic
170 Ethics
180 Ancient, medieval & eastern philosophy
190 Modern western philosophy
200 Religion
210 Philosophy & theory of religion
220 The Bible
230 Christianity
240 Christian practice & observance
250 Christian pastoral practice & religious orders
260 Christian organization, social work & worship
270 History of Christianity
280 Christian denominations
290 Other religions
300 Social sciences, sociology & anthropology
310 Statistics
320 Political science
330 Economics
340 Law
350 Public administration & military science
360 Social problems & social services
370 Education
380 Commerce, communications & transportation
390 Customs, etiquette & folklore
400 Language
410 Linguistics
420 English & Old English languages
430 German & related languages
440 French & related languages
450 Italian, Romanian & related languages
460 Spanish, Portuguese, Galician
470 Latin & Italic languages
480 Classical & modern Greek languages
490 Other languages
500 Science
510 Mathematics
520 Astronomy
530 Physics
540 Chemistry
550 Earth sciences & geology
560 Fossils & prehistoric life
570 Biology
580 Plants (Botany)
590 Animals (Zoology)
600 Technology
610 Medicine & health
620 Engineering
630 Agriculture
640 Home & family management
650 Management & public relations
660 Chemical engineering
670 Manufacturing
680 Manufacture for specific uses
690 Construction of buildings
700 Arts
710 Area planning & landscape architecture
720 Architecture
730 Sculpture, ceramics & metalwork
740 Graphic arts & decorative arts
750 Painting
760 Printmaking & prints
770 Photography, computer art, film, video
780 Music
790 Sports, games & entertainment
800 Literature, rhetoric & criticism
810 American literature in English
820 English & Old English literatures
830 German & related literatures
840 French & related literatures
850 Italian, Romanian & related literatures
860 Spanish, Portuguese, Galician literatures
870 Latin & Italic literatures
880 Classical & modern Greek literatures
890 Other literatures
900 History
910 Geography & travel
920 Biography & genealogy
930 History of ancient world (to ca. 499)
940 History of Europe
950 History of Asia
960 History of Africa
970 History of North America
980 History of South America
990 History of other areas

Third Summary

Thousand Sections

000

000 Computer science, information, general works
001 Knowledge
002 The book
003 Systems
004 Computer science
005 Computer programming, programs, data, security
006 Special computer methods
007 [Unassigned]
008 [Unassigned]
009 [Unassigned]
010 Bibliography
011 Bibliographies and catalogs
012 Bibliographies and catalogs of individuals
013 [Unassigned]
014 Of anonymous & pseudonymous works
015 Of works from specific places
016 Of works on specific subjects
017 Of works held in specific collections or offered for sale
018 [Unassigned]
019 [Unassigned]
020 Library and information sciences
021 Relationships of libraries and archives
022 Administration of physical plant
023 Personnel management
024 [Unassigned]
025 Operations of libraries and archives
026 Libraries and archives devoted to specific subjects
027 General libraries and archives
028 Reading and use of other information media
029 [Unassigned]
030 General encyclopedic works
031 General encyclopedic works in American English
032 General encyclopedic works in English
033 Encyclopedias in other Germanic languages
034 Encyclopedias in French, Occitan, Catalan
035 Encyclopedias in Italian, Romanian & related languages
036 Encyclopedias in Spanish, Portuguese, Galician
037 General encyclopedic works in Slavic languages
038 General encyclopedic works in Scandinavian languages
039 General encyclopedic works in other languages
040 [Unassigned]
041 [Unassigned]
042 [Unassigned]
043 [Unassigned]
044 [Unassigned]
045 [Unassigned]
046 [Unassigned]
047 [Unassigned]
048 [Unassigned]
049 [Unassigned]
050 General serial publications
051 General serial publications in American English
052 General serial publications in English
053 Serials in other Germanic languages
054 Serials in French, Occitan, Catalan
055 Serials in Italian, Romanian & related languages
056 Serials in Spanish, Portuguese, Galician
057 General serial publications in Slavic languages
058 Serials in Scandinavian languages
059 General serial publications in other languages
060 General organizations & museology
061 General organizations in North America
062 General organizations in British Isles; in England
063 General organizations in Germany
064 General organizations in France and Monaco
065 General organizations in Italy
066 General organizations in Spain
067 General organizations in Russia
068 General organizations in other geographic areas
069 Museology (museum science)
070 Documentary, educational, news media; journalism
071 Journalism and newspapers in North America
072 Journalism and newspapers in British Isles
073 Journalism and newspapers in Germany
074 Journalism and newspapers in France and Monaco
075 Journalism and newspapers in Italy
076 Journalism and newspapers in Spain
077 Journalism and newspapers in Russia
078 Journalism and newspapers in Scandinavia
079 Newspapers in other geographic areas
080 General collections
081 General collections in American English
082 General collections in English
083 General collections in other Germanic languages
084 General collections in French, Occitan, Catalan
085 Collections in Italian, Romanian & related languages
086 Collections in Spanish, Portuguese, Galician
087 General collections in Slavic languages
088 General collections in Scandinavian languages
089 General collections in other languages
090 Manuscripts, rare books
091 Manuscripts
092 Block books
093 Incunabula
094 Printed books
095 Books notable for bindings
096 Books notable for illustrations and materials
097 Books notable for ownership or origin
098 Prohibited works, forgeries, hoaxes
099 Books notable for format

 

100

100 Philosophy & psychology
101 Theory of philosophy
102 Miscellany of philosophy
103 Dictionaries & encyclopedias
104 [Unassigned]
105 Serial publications of philosophy
106 Organizations & management
107 Education, research & related topics
108 Groups of people
109 Historical and collected biography
110 Metaphysics
111 Ontology
112 [Unassigned]
113 Cosmology (Philosophy of nature)
114 Space
115 Time
116 Change
117 Structure
118 Force and energy
119 Number and quantity
120 Epistemology, causation, humankind
121 Epistemology (Theory of knowledge)
122 Causation
123 Determinism and indeterminism
124 Teleology
125 [Unassigned]
126 The self
127 The unconscious and the subconscious
128 Humankind
129 Origin and destiny of individual souls
130 Parapsychology and occultism
131 Parapsychological and occult methods
132 [Unassigned]
133 Specific topics in parapsychology & occultism
134 [Unassigned]
135 Dreams and mysteries
136 [Unassigned]
137 Divinatory graphology
138 Physiognomy
139 Phrenology
140 Specific philosophical schools
141 Idealism and related systems
142 Critical philosophy
143 Bergsonism and intuitionism
144 Humanism and related systems
145 Sensationalism
146 Naturalism and related systems
147 Pantheism and related systems
148 Dogmatism, eclecticism, liberalism, etc.
149 Other philosophical systems and doctrines
150 Psychology
151 [Unassigned]
152 Perception, movement, emotions & drives
153 Conscious mental processes & intelligence
154 Subconscious & altered states
155 Differential & developmental psychology
156 Comparative psychology
157 [Unassigned]
158 Applied psychology
159 [Unassigned]
160 Philosophical logic
161 Induction
162 Deduction
163 [Unassigned]
164 [Unassigned]
165 Fallacies and sources of error
166 Syllogisms
167 Hypotheses
168 Argument and persuasion
169 Analogy
170 Ethics (Moral philosophy)
171 Ethical systems
172 Political ethics
173 Ethics of family relationships
174 Occupational ethics
175 Ethics of recreation & leisure
176 Ethics of sex and reproduction
177 Ethics of social relations
178 Ethics of consumption
179 Other ethical norms
180 Ancient, medieval, eastern philosophy
181 Eastern philosophy
182 Pre-Socratic Greek philosophies
183 Sophistic, Socratic, related philosophies
184 Platonic philosophy
185 Aristotelian philosophy
186 Skeptic and Neoplatonic philosophies
187 Epicurean philosophy
188 Stoic philosophy
189 Medieval western philosophy
190 Modern western philosophy
191 Philosophy of United States and Canada
192 Philosophy of British Isles
193 Philosophy of Germany and Austria
194 Philosophy of France
195 Philosophy of Italy
196 Philosophy of Spain and Portugal
197 Philosophy of Russia
198 Philosophy of Scandinavia and Finland
199 Philosophy of other geographic areas

 

200

200 Religion
201 Religious mythology & social theology
202 Doctrines
203 Public worship and other practices
204 Religious experience, life, practice
205 Religious ethics
206 Leaders and organization
207 Missions and religious education
208 Sources
209 Sects and reform movements
210 Philosophy and theory of religion
211 Concepts of God
212 Existence, knowability & attributes of God
213 Creation
214 Theodicy
215 Science and religion
216 [Unassigned]
217 [Unassigned]
218 Humankind
219 [Unassigned]
220 Bible
221 Old Testament (Tanakh)
222 Historical books of Old Testament
223 Poetic books of Old Testament
224 Prophetic books of Old Testament
225 New Testament
226 Gospels and Acts
227 Epistles
228 Revelation (Apocalypse)
229 Apocrypha and pseudepigrapha
230 Christianity
231 God
232 Jesus Christ and his family
233 Humankind
234 Salvation and grace
235 Spiritual beings
236 Eschatology
237 [Unassigned]
238 Creeds & catechisms
239 Apologetics and polemics
240 Christian moral and devotional theology
241 Christian ethics
242 Devotional literature
243 Evangelistic writings for individuals
244 [Unassigned]
245 [Unassigned]
246 Use of art in Christianity
247 Church furnishings and related articles
248 Christian experience, practice, life
249 Christian observances in family life
250 Local Christian church and religious orders
251 Preaching (Homiletics)
252 Texts of sermons
253 Pastoral work (Pastoral theology)
254 Local church administration
255 Religious congregations and orders
256 [Unassigned]
257 [Unassigned]
258 [Unassigned]
259 Pastoral care of families & kinds of persons
260 Christian social and ecclesiastical theology
261 Social theology and interreligious relations
262 Ecclesiology
263 Days, times, places of religious observance
264 Public worship
265 Sacraments, other rites and acts
266 Missions
267 Associations for religious work
268 Religious education
269 Spiritual renewal
270 History, geographic treatment, biography
271 Religious orders in church history
272 Persecutions in general church history
273 Doctrinal controversies & heresies
274 History of Christianity in Europe
275 History of Christianity in Asia
276 History of Christianity in Africa
277 History of Christianity in North America
278 History of Christianity in South America
279 History of Christianity in other areas
280 Denominations & sects of Christian church
281 Early church and Eastern churches
282 Roman Catholic Church
283 Anglican churches
284 Protestants of Continental origin
285 Presbyterian, Reformed & Congregational
286 Baptist, Restoration & Adventist
287 Methodist and related churches
288 [Unassigned]
289 Other denominations and sects
290 Other religions
291 [Unassigned]
292 Classical religion (Greek & Roman religion)
293 Germanic religion
294 Religions of Indic origin
295 Zoroastrianism (Mazdaism, Parseeism)
296 Judaism
297 Islam, Babism & Bahai Faith
298 (Optional number)
299 Religions not provided for elsewhere

 

300

300 Social sciences
301 Sociology and anthropology
302 Social interaction
303 Social processes
304 Factors affecting social behavior
305 Groups of people
306 Culture and institutions
307 Communities
308 [Unassigned]
309 [Unassigned]
310 Collections of general statistics
311 [Unassigned]
312 [Unassigned]
313 [Unassigned]
314 General statistics of Europe
315 General statistics of Asia
316 General statistics of Africa
317 General statistics of North America
318 General statistics of South America
319 General statistics of other areas
320 Political science (Politics and government)
321 Systems of governments and states
322 Relation of state to organized groups
323 Civil and political rights
324 The political process
325 International migration and colonization
326 Slavery and emancipation
327 International relations
328 The legislative process
329 [Unassigned]
330 Economics
331 Labor economics
332 Financial economics
333 Economics of land and energy
334 Cooperatives
335 Socialism and related systems
336 Public finance
337 International economics
338 Production
339 Macroeconomics and related topics
340 Law
341 Law of nations
342 Constitutional and administrative law
343 Military, tax, trade and industrial law
344 Labor, social, education & cultural law
345 Criminal law
346 Private law
347 Procedure and courts
348 Laws, regulations, cases
349 Law of specific jurisdictions & areas
350 Public administration and military science
351 Public administration
352 General considerations of public administration
353 Specific fields of public administration
354 Administration of economy & environment
355 Military science
356 Foot forces & warfare
357 Mounted forces & warfare
358 Air & other specialized forces
359 Sea forces & warfare
360 Social problems & services; associations
361 Social problems & services
362 Social problems & services to groups
363 Other social problems and services
364 Criminology
365 Penal and related institutions
366 Secret associations and societies
367 General clubs
368 Insurance
369 Associations
370 Education
371 Schools and their activities; special education
372 Primary education (Elementary education)
373 Secondary education
374 Adult education
375 Curricula
376 [Unassigned]
377 [Unassigned]
378 Higher education (Tertiary education)
379 Public policy issues in education
380 Commerce, communications, transportation
381 Commerce (Trade)
382 International commerce
383 Postal communication
384 Communications
385 Railroad transportation
386 Inland waterway and ferry transportation
387 Water, air, space transportation
388 Transportation
389 Metrology and standardization
390 Customs, etiquette, folklore
391 Costume and personal appearance
392 Customs of life cycle and domestic life
393 Death customs
394 General customs
395 Etiquette (Manners)
396 [Unassigned]
397 [Unassigned]
398 Folklore
399 Customs of war and diplomacy

 

400

400 Language
401 Philosophy and theory
402 Miscellany
403 Dictionaries & encyclopedias
404 Special topics of language
405 Serial publications
406 Organizations and management
407 Education, research, related topics
408 Groups of people
409 Geographic treatment and biography
410 Linguistics
411 Writing systems
412 Etymology
413 Dictionaries
414 Phonology & phonetics
415 Grammar
416 [Unassigned]
417 Dialectology and historical linguistics
418 Applied linguistics
419 Sign languages
420 English & Old English (Anglo-Saxon)
421 English writing system, phonology, phonetics
422 Etymology of standard English
423 Dictionaries of standard English
424 [Unassigned]
425 Grammar of standard English
426 [Unassigned]
427 English language variations
428 Standard English usage
429 Old English (Anglo-Saxon)
430 German and related languages
431 Writing system, phonology, phonetics
432 Etymology of standard German
433 Dictionaries of standard German
434 [Unassigned]
435 Grammar of standard German
436 [Unassigned]
437 German language variations
438 Standard German usage
439 Other Germanic languages
440 French & related Romance languages
441 Writing system, phonology, phonetics
442 Etymology of standard French
443 Dictionaries of standard French
444 [Unassigned]
445 Grammar of standard French
446 [Unassigned]
447 French language variations
448 Standard French usage
449 Occitan, Catalan, Franco-Provençal
450 Italian, Romanian & related languages
451 Writing system, phonology, phonetics
452 Etymology of standard Italian
453 Dictionaries of standard Italian
454 [Unassigned]
455 Grammar of standard Italian
456 [Unassigned]
457 Italian language variations
458 Standard Italian usage
459 Romanian, Rhaetian, Sardinian, Corsican
460 Spanish, Portuguese, Galician
461 Writing system, phonology, phonetics
462 Etymology of standard Spanish
463 Dictionaries of standard Spanish
464 [Unassigned]
465 Grammar of standard Spanish
466 [Unassigned]
467 Spanish language variations
468 Standard Spanish usage
469 Portuguese
470 Latin and related Italic languages
471 Writing system, phonology, phonetics
472 Etymology of classical Latin
473 Dictionaries of classical Latin
474 [Unassigned]
475 Grammar of classical Latin
476 [Unassigned]
477 Old, postclassical, Vulgar Latin
478 Classical Latin usage
479 Other Italic languages
480 Classical Greek; Hellenic languages
481 Writing system, phonology, phonetics
482 Etymology of classical Greek
483 Dictionaries of classical Greek
484 [Unassigned]
485 Grammar of classical Greek
486 [Unassigned]
487 Preclassical and postclassical Greek
488 Classical Greek usage
489 Other Hellenic languages
490 Other languages
491 East Indo-European and Celtic languages
492 Afro-Asiatic languages
493 Non-Semitic Afro-Asiatic languages
494 Altaic, Uralic, Hyperborean & Dravidian
495 Languages of East and Southeast Asia
496 African languages
497 North American native languages
498 South American native languages
499 Austronesian & other languages

 

500

500 Natural Sciences and Mathemetics
501 Philosophy and theory
502 Miscellany
503 Dictionaries & encyclopedias
504 [Unassigned]
505 Serial publications
506 Organizations and management
507 Education, research, related topics
508 Natural history
509 History, geographic treatment, biography
510 Mathematics
511 General principles of mathematics
512 Algebra
513 Arithmetic
514 Topology
515 Analysis
516 Geometry
517 [Unassigned]
518 Numerical analysis
519 Probabilities and applied mathematics
520 Astronomy and allied sciences
521 Celestial mechanics
522 Techniques, equipment & materials
523 Specific celestial bodies and phenomena
524 [Unassigned]
525 Earth (Astronomical geography)
526 Mathematical geography
527 Celestial navigation
528 Ephemerides
529 Chronology
530 Physics
531 Classical mechanics
532 Fluid mechanics
533 Pneumatics (Gas mechanics)
534 Sound and related vibrations
535 Light and related radiation
536 Heat
537 Electricity and electronics
538 Magnetism
539 Modern physics
540 Chemistry and allied sciences
541 Physical chemistry
542 Techniques, equipment & materials
543 Analytical chemistry
544 [Unassigned]
545 [Unassigned]
546 Inorganic chemistry
547 Organic chemistry
548 Crystallography
549 Mineralogy
550 Earth sciences
551 Geology, hydrology, meteorology
552 Petrology
553 Economic geology
554 Earth sciences of Europe
555 Earth sciences of Asia
556 Earth sciences of Africa
557 Earth sciences of North America
558 Earth sciences of South America
559 Earth sciences of other areas
560 Paleontology
561 Paleobotany; fossil microorganisms
562 Fossil invertebrates
563 Fossil marine & seashore invertebrates
564 Fossil Mollucas & Molluscoidea
565 Fossil Arthropoda
566 Fossil Chordata
567 Fossil cold-blooded vertebrates
568 Fossil Aves (birds)
569 Fossil Mammalia
570 Biology
571 Physiology & related subjects
572 Biochemistry
573 Specific physiological systems in animals
574 [Unassigned]
575 Specific parts of & systems in plants
576 Genetics and evolution
577 Ecology
578 Natural history of organisms
579 Microorganisms, fungi & algae
580 Plants
581 Specific topics in natural history of plants
582 Plants noted for characteristics & flowers
583 Eudicots and Ceratophyllales
584 Monocots, Chloranthales, magnoliids
585 Pinophyta
586 Cryptogamia
587 Pteridophyta
588 Bryophyta
589 [Unassigned]
590 Animals
591 Specific topics in natural history of animals
592 Invertebrates
593 Marine & seashore invertebrates
594 Mollusca and Molluscoidea
595 Arthropoda
596 Chordata
597 Cold-blooded vertebrates
598 Aves
599 Mammalia

 

600

600 Technology (Applied sciences)
601 Philosophy and theory
602 Miscellany
603 Dictionaries, encyclopedias, concordances
604 Technical drawing, hazardous materials
605 Serial publications
606 Organizations
607 Education, research, related topics
608 Patents
609 History, geographic treatment, biography
610 Medicine and health
611 Human anatomy, cytology, histology
612 Human physiology
613 Personal health & safety
614 Forensic medicine; incidence of disease
615 Pharmacology and therapeutics
616 Diseases
617 Surgery & related medical specialties
618 Gynecology, obstetrics, pediatrics, geriatrics
619 [Unassigned]
620 Engineering and allied operations
621 Applied physics
622 Mining and related operations
623 Military and nautical engineering
624 Civil engineering
625 Engineering of railroads and roads
626 [Unassigned]
627 Hydraulic engineering
628 Sanitary engineering
629 Other branches of engineering
630 Agriculture and related technologies
631 Techniques, equipment & materials
632 Plant injuries, diseases, pests
633 Field and plantation crops
634 Orchards, fruits, forestry
635 Garden crops (Horticulture)
636 Animal husbandry
637 Processing dairy and related products
638 Insect culture
639 Hunting, fishing & conservation
640 Home and family management
641 Food and drink
642 Meals and table service
643 Housing and household equipment
644 Household utilities
645 Household furnishings
646 Sewing, clothing & personal living
647 Management of public households
648 Housekeeping
649 Child rearing & home care of people
650 Management and auxiliary services
651 Office services
652 Processes of written communication
653 Shorthand
654 [Unassigned]
655 [Unassigned]
656 [Unassigned]
657 Accounting
658 General management
659 Advertising and public relations
660 Chemical engineering
661 Technology of industrial chemicals
662 Explosives, fuels & related products
663 Beverage technology
664 Food technology
665 Industrial oils, fats, waxes & gases
666 Ceramic & allied technologies
667 Cleaning, color & coating technologies
668 Technology of other organic products
669 Metallurgy
670 Manufacturing
671 Metalworking & primary metal products
672 Iron, steel, other iron alloys
673 Nonferrous metals
674 Lumber processing, wood products, cork
675 Leather and fur processing
676 Pulp and paper technology
677 Textiles
678 Elastomers and elastomer products
679 Other products of specific materials
680 Manufacture of products for specific uses
681 Precision instruments and other devices
682 Small forge work (Blacksmithing)
683 Hardware & household appliances
684 Furnishings and home workshops
685 Leather, fur goods & related products
686 Printing and related activities
687 Clothing and accessories
688 Other final products & packaging
689 [Unassigned]
690 Construction of buildings
691 Building materials
692 Auxiliary construction practices
693 Specific materials & purposes
694 Wood construction
695 Roof covering
696 Utilities
697 Heating, ventilating & air-conditioning
698 Detail finishing
699 [Unassigned]

 

700

700 The arts
701 Philosophy of fine & decorative arts
702 Miscellany of fine and decorative arts
703 Dictionaries of fine & decorative arts
704 Special topics in fine and decorative arts
705 Serial publications of fine & decorative arts
706 Organizations & management
707 Education, research & related topics
708 Galleries, museums & private collections
709 History, geographic treatment, biography
710 Area planning and landscape architecture
711 Area planning (Civic art)
712 Landscape architecture (Landscape design)
713 Landscape architecture of trafficways
714 Water features in landscape architecture
715 Woody plants in landscape architecture
716 Herbaceous plants
717 Structures in landscape architecture
718 Landscape design of cemeteries
719 Natural landscapes
720 Architecture
721 Architectural materials and structure
722 Architecture from earliest times to ca. 300
723 Architecture from ca. 300 to 1399
724 Architecture from 1400
725 Public structures
726 Buildings for religious and related purposes
727 Buildings for education & research
728 Residential and related buildings
729 Design & decoration
730 Sculpture and related arts
731 Processes, forms, subjects of sculpture
732 Sculpture to ca. 500
733 Greek, Etruscan, Roman sculpture
734 Sculpture from ca. 500 to 1399
735 Sculpture from 1400
736 Carving and carvings
737 Numismatics and sigillography
738 Ceramic arts
739 Art metalwork
740 Graphic arts and decorative arts
741 Drawing and drawings
742 Perspective in drawing
743 Drawing and drawings by subject
744 [Unassigned]
745 Decorative arts
746 Textile arts
747 Interior decoration
748 Glass
749 Furniture and accessories
750 Painting and paintings
751 Techniques, equipment, materials & forms
752 Color
753 Symbolism, allegory, mythology, legend
754 Genre paintings
755 Religion
756 [Unassigned]
757 Human figures
758 Nature, cityscapes & other subjects
759 History, geographic treatment, biography
760 Printmaking & prints
761 Relief processes (Block printing)
762 [Unassigned]
763 Lithographic processes
764 Chromolithography and serigraphy
765 Metal engraving
766 Mezzotinting, aquatinting, related processes
767 Etching and drypoint
768 [Unassigned]
769 Prints
770 Photography, computer art, cinematography
771 Techniques, equipment & materials
772 Metallic salt processes
773 Pigment processes of printing
774 Holography
775 [Unassigned]
776 Computer art (Digital art)
777 Cinematography and videography
778 Specific fields & kinds of photography
779 Photographic images
780 Music
781 General principles and musical forms
782 Vocal music
783 Music for single voices
784 Instruments & instrumental ensembles
785 Ensembles with one instrument per part
786 Keyboard & other instruments
787 Stringed instruments (Chordophones)
788 Wind instruments (Aerophones)
789 (Optional number)
790 Recreational and performing arts
791 Public performances
792 Stage presentations
793 Indoor games and amusements
794 Indoor games of skill
795 Games of chance
796 Athletic and outdoor sports and games
797 Aquatic and air sports
798 Equestrian sports and animal racing
799 Fishing, hunting, shooting

 

800

800 Literature (Belles-lettres) and rhetoric
801 Philosophy and theory
802 Miscellany
803 Dictionaries & encyclopedias
804 [Unassigned]
805 Serial publications
806 Organizations and management
807 Education, research, related topics
808 Rhetoric & collections of literature
809 History, description & criticism
810 American literature in English
811 American poetry in English
812 American drama in English
813 American fiction in English
814 American essays in English
815 American speeches in English
816 American letters in English
817 American humor and satire in English
818 American miscellaneous writings
819 (Optional number)
820 English & Old English literatures
821 English poetry
822 English drama
823 English fiction
824 English essays
825 English speeches
826 English letters
827 English humor and satire
828 English miscellaneous writings
829 Old English (Anglo-Saxon) literature
830 Literatures of Germanic languages
831 German poetry
832 German drama
833 German fiction
834 German essays
835 German speeches
836 German letters
837 German humor and satire
838 German miscellaneous writings
839 Other Germanic literatures
840 Literatures of Romance languages
841 French poetry
842 French drama
843 French fiction
844 French essays
845 French speeches
846 French letters
847 French humor and satire
848 French miscellaneous writings
849 Occitan, Catalan, Franco-Provençal
850 Italian, Romanian & related literatures
851 Italian poetry
852 Italian drama
853 Italian fiction
854 Italian essays
855 Italian speeches
856 Italian letters
857 Italian humor and satire
858 Italian miscellaneous writings
859 Romanian & related literatures
860 Spanish & Portuguese literatures
861 Spanish poetry
862 Spanish drama
863 Spanish fiction
864 Spanish essays
865 Spanish speeches
866 Spanish letters
867 Spanish humor and satire
868 Spanish miscellaneous writings
869 Portuguese and Galician literatures
870 Latin & related Italic literatures
871 Latin poetry
872 Latin dramatic poetry and drama
873 Latin epic poetry and fiction
874 Latin lyric poetry
875 Latin speeches
876 Latin letters
877 Latin humor and satire
878 Latin miscellaneous writings
879 Literatures of other Italic languages
880 Classical Greek & Hellenic literatures
881 Classical Greek poetry
882 Classical Greek dramatic poetry & drama
883 Classical Greek epic poetry and fiction
884 Classical Greek lyric poetry
885 Classical Greek speeches
886 Classical Greek letters
887 Classical Greek humor and satire
888 Classical Greek miscellaneous writings
889 Modern Greek literature
890 Literatures of other languages
891 East Indo-European and Celtic literatures
892 Afro-Asiatic literatures
893 Non-Semitic Afro-Asiatic literatures
894 Altaic, Uralic, Hyperborean & Dravidian
895 Literatures of East and Southeast Asia
896 African literatures
897 North American native literatures
898 South American native literatures
899 Austronesian & other literatures

 

900

900 History & geography
901 Philosophy and theory of history
902 Miscellany of history
903 Dictionaries & encyclopedias
904 Collected accounts of events
905 Serial publications of history
906 Organizations & management
907 Education, research & related topics
908 Groups of people
909 World history
910 Geography and travel
911 Historical geography
912 Maps and plans of surface of earth
913 Geography of & travel in ancient world
914 Geography of and travel in Europe
915 Geography of and travel in Asia
916 Geography of and travel in Africa
917 Geography of & travel in North America
918 Geography of & travel in South America
919 Geography of and travel in other areas
920 Biography, genealogy, insignia
921 (Optional number)
922 (Optional number)
923 (Optional number)
924 (Optional number)
925 (Optional number)
926 (Optional number)
927 (Optional number)
928 (Optional number)
929 Genealogy, names & insignia
930 History of ancient world to ca. 499
931 China to 420
932 Egypt to 640
933 Palestine to 70
934 India to 647
935 Mesopotamia & Iranian Plateau to 637
936 Europe north & west of Italy to ca. 499
937 Italy & adjacent territories to 476
938 Greece to 323
939 Other parts of ancient world
940 History of Europe
941 British Isles
942 England and Wales
943 Germany & central Europe
944 France and Monaco
945 Italy, San Marino, Vatican City, Malta
946 Spain, Andorra, Gibraltar, Portugal
947 Russia & east Europe
948 Scandinavia and Finland
949 Other parts of Europe
950 History of Asia
951 China and adjacent areas
952 Japan
953 Arabian Peninsula and adjacent areas
954 India & south Asia
955 Iran
956 Middle East (Near East)
957 Siberia (Asiatic Russia)
958 Central Asia
959 Southeast Asia
960 History of Africa
961 Tunisia and Libya
962 Egypt, Sudan, South Sudan
963 Ethiopia and Eritrea
964 Morocco, Ceuta, Melilla, Western Sahara
965 Algeria
966 West Africa and offshore islands
967 Central Africa and offshore islands
968 South Africa & southern Africa
969 South Indian Ocean islands
970 History of North America
971 Canada
972 Mexico, Central America, West Indies
973 United States
974 Northeastern United States
975 Southeastern United States
976 South central United States
977 North central United States
978 Western United States
979 Great Basin & Pacific Slope region
980 History of South America
981 Brazil
982 Argentina
983 Chile
984 Bolivia
985 Peru
986 Colombia and Ecuador
987 Venezuela
988 Guiana
989 Paraguay and Uruguay
990 History of other areas
991 [Unassigned]
992 [Unassigned]
993 New Zealand
994 Australia
995 New Guinea & Melanesia
996 Polynesia & Pacific Ocean islands
997 Atlantic Ocean islands
998 Arctic islands and Antarctica
999 Extraterrestrial worlds

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