OCLC WorldCat Dissertations and Theses (WorldCatDissertations)
OCLC catalog of dissertations and theses available in OCLC member libraries
Why select this database?
This database provides fast and convenient access to the dissertations and theses available in OCLC member libraries. Many of these are available electronically, at no charge, directly from the publishing institution.
| Database details | |
|---|---|
| Subjects | All dissertations, theses and published material based on theses cataloged by OCLC members, including all subjects. |
| Sources | OCLC member libraries |
| Number of records | Over 8 million records in the database |
| Dates covered | All cataloged dissertations, theses and published material based on theses and dissertations to the present. |
| Updated | Daily |
| Producer information | OCLC Online Computer Library Center, Inc. Other FirstSearch databases by this producer: |
| Copyright | Copyright © 1978- <!--ATTN T-SYSTEMS: Sprinkle, asset ID 28885-->2012<!-- // T-SYSTEMS--> OCLC Online Computer Library Center, Inc. |
Index labels and examples of an expert search in WorldCat Dissertations and Theses
Use a colon after an index label (for example, au:) when you are not certain of your search terms. Use an equal sign after an index label (au=) for an exact match search. You can search with an index label from any search screen. The information you type overrides any default menu selections. The following examples show sample rather than actual searches.
| Search indexes | Labels | Examples |
|---|---|---|
| Keyword | kw: | coffee or tea and house+ [keyword searches, publication year, ISBN, geographic codes, map data, and all the information found in the Author, Title, Notes, Publisher, Publisher location, and Subject indexes] |
| Access Method | am: | www oclc org [or] oclc (omit http:, and use spaces instead of punctuation or special characters) |
| Accession Number | no: | 4620335 (OCLC) |
| Author | au: | saint-arroman (use single quotes around 'le' and other words that are operators; operators supported in FirstSearch: Boolean search operators, parentheses, proximity operators, wildcards; operators included are le, ge, it, gt, n, near, w, with, and, or, not) |
| Author Phrase | au= | saint-arroman auguste (use double quotes around exact phrases; omit single quote from 'le' operator when the double quote is used to search for an exact phrase) |
| Corporate and Conference Name | cn: | canadian |
| Corporate and Conference Name Phrase | cn= | canadian acoustics week |
| Descriptor | de: | voice disorders |
| Descriptor Phrase | de= | voice disorders in children |
| Genre/Form | ge: | solo piano |
| Genre/Form Phrase | ge= | screenplays |
| Geographic Coverage | gc: | cape |
| Geographic Coverage Phrase | gc= | capetown |
| ISBN | nb: | 3196311821 or 31-9631-182-1 9783540287070 or 978-3-540287-07-0 (search with or without hyphens) |
| ISSN | ns: | 0000-0019 (use hyphens) |
| Language Phrase | ln= | kw:coffeehouse* and ln= japanese (See the drop-down list under Limit to: Language for the complete list of languages.) |
| Library of Congress Call No. | lc: | hd9000.6 (index deletes and collapses all spaces and punctuation, except periods) |
| LC Control Number | nl: | ne64-2560 or ne64002560 or ne642560 or 64-2560 or 64002560 or 642560 (prefixes can be immediately connected to the number or removed; hyphens can be included or removed; the number is searchable as it is stored, with the year and then six digits with leading zeros for unused digits, or as it is often displayed, without zeros) |
| Material Type | mt: | vhs |
| Material Type Phrase | mt= | vhs tape |
| Musical Composition | mc: | jazz |
| Musical Composition Phrase | mc= | folk music |
| Named Corporation and Conference | nc: | world conference on women |
| Named Corporation and Conference Phrase | nc= | intel corporation |
| Named Person | na: | mandela |
| Named Person Phrase | na= | mandela, nelson (last name first with first comma retained) |
| Notes/Comments (includes degree-granting institution) | nt: | erasmus universiteit rotterdam |
| Personal Name | pn: | lemaire |
| Personal Name Phrase | pn= | weijer, kees (use last name first with or without the first comma retained) |
| Publisher | pb: | media |
| Publisher Phrase | pb= | new star media inc |
| Publisher Location | pl: | china |
| Series Title | se: | emb report |
| Series Title Phrase | se= | emb evaluation report |
| Standard Number | sn: | 1097461x or 1097-461x 9783540287070 or 978-3-540287-07-0 1550463160 or 155-0463-160 64002560 (for all searches, hyphens can be included in the search or removed; for the LCCN number, only the number used for storage, with the year and then six digits with leading zeros for unused digits, is indexed; many other standard numbers are included in this index) |
| Subject | su: | coffee and tea house+ |
| Subject Phrase | su= | coffeehouses in art |
| Subject All | sa= | medical fees canada (phrase search of complete subject heading with all parts, so "medical fees--canada" is searched as a single phrase) |
| Title | ti: | music w3 british w3 enlightenment |
| Title Phrase | ti= | music theory in the british isles during the enlightenment |
| Uniform title | ut: | bible |
| Uniform Title Phrase | ut= | selected poems 1930-1972 |
| Update Date | up: | 20060101 |
Refine your results by adding these labels to your search terms:
| Refine by | Label | Example | ||
|---|---|---|---|---|
| DLC restrictor | dl: | ti: anything and dl:y | ||
| Document type¹ | bks (books) | mix (mixed material) | dt= | (history and dt=map) |
| com (computer) | rec (recordings) | |||
| map (maps) | sco (scores) | |||
| vis (visual media) | ser (serials) | |||
| url (internet resource) | art (articles) | |||
| int (continually updated resource) | ||||
| Language² | ln= | ln=spa or ln=spanish | ||
| Library holdings³ | li= | li=ocl | ||
| Material type 4 | mt: or mt= | history and mt=juvenile history and mt=microform | ||
| Number of libraries 5 | cg: | history and cg:31- | ||
| Year(s) of publication | yr: | yr:1996-1998 | ||
¹ Use these limits only in combination with another search statement.
² Valid values for the language limiter include both the MARC three-letter language code and the english spelling of a language. For example, Spanish can be searched using ln=spa or ln=spanish.
³ For a list of library symbols, visit the Participating Institutions List Web site
4 A number of specific searches are available with the material type index can make an excellent method for limiting records. For a complete list of material type indexes see Material types.
5 For a complete list of codes for the Number of Libraries index, see Number of library holdings.