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083  Additional Dewey Decimal Classification Number (R)

Input Standards

Required if applicable/Optional
1st Indicator  Type of edition
0 Full edition
1 Abridged edition
7 Other edition specified in subfield ‡2
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
‡a Classification number (R) Mandatory/Mandatory
‡c Classification number--Ending number of span (R) Required if applicable/Required if applicable
‡m Standard or optional designation (NR) Mandatory/Mandatory
‡q Assigning agency (NR) Optional/Optional
‡y Table sequence number for internal subarrangement or add table (R) Required if applicable/Required if applicable
‡z Table identification (R) Required if applicable/Required if applicable
‡2 Edition number (NR) Mandatory/Mandatory
‡8 Field link and sequence number (R) Optional/Optional


Classification number used for subject access. It is taken from Dewey Decimal Classification and Relative Index, the Abridged Dewey Decimal Classification and Relative Index, and electronic updates to either edition.

1st Indicator

Type of edition. Indicates the edition from which the Dewey Decimal classification is taken. Use subfield ‡2 for the actual edition number.


Full edition. The class number was taken from the full edition.

082 0 4 388.13 ‡2 22
083 0   ‡z 2 ‡a 4947 ‡2 22
[For a book on tunnels in the Swiss Alps. The Dewey number 388.13 is used for interdisciplinary works on tunnels, but the number itself is broader, covering a variety of special road features. Consequently, geographic area notation cannot be added to the primary number in field 082. Field 083 contains the geographic area notation from Table 2 for the Swiss Alps.]

Abridged edition. The class number was taken from the abridged edition.


Other edition specified in subfield ‡2. The edition is specified in subfield ‡2 (Edition number).

2nd Indicator


blank character



‡a Classification number

The additional classification number applied to the resource, which could be used for subject access in addition to the primary classification number assigned.

082 0 4 599.0994 ‡2 22
083 0   598.0994 ‡2 22
083 0   ‡z 2 ‡a 94 ‡2 22
[For a book on Australian birds and mammals. The Dewey number 599 is used for works on mammals and for comprehensive works on birds and mammals. The rest of the primary number in field 082 consists of 09 Geographic treatment from Table 1 and 94 Australia from Table 2. There is no way to tell from this number whether the book contains information about birds or not. The Dewey number 598 in the first 083 field means birds, and the full number means birds in Australia. The second 083 field has the Table 2 area number for Australia; it is intended to help users seeking everything about Australia.]
‡c Classification number--Ending number of span

Ending number of a number span when the beginning number of the span is contained in subfield ‡a.

‡m Standard or optional designation

Designates whether the classification number contained in the field is from the standard or optional part of the schedules or tables of the scheme identified by the first indicator (Type of edition) and by subfield ‡2 (Edition number). The following codes are used: a (standard) and b (optional).

Standard or optional designation: If subfield ‡m is present, only one subfield ‡a should be coded, unless the value in subfield ‡m applies to all numbers in repeated occurrences of subfield ‡a. Otherwise, the field is repeated.

082 0 0 345.73/0772 ‡2 20 ‡m a
082 0 0 347.305772 ‡2 20 ‡m b
‡q Assigning agency

The MARC organization code of the institution that assigned the classification number. See MARC Code List for Organizations (http://www.loc.gov/marc/organizations/orgshome.html).

083 0   ‡a 331.11 ‡q OCoLC-C ‡2 23
‡y Table sequence number for internal subarrangement or add table

Sequence number or other identifier for an internal classification subarrangement or add table. If the first or only add table found at a classification number is the number 1, and succeeding integers are used for any following add tables found at that number.

‡z Table identification

Number of the table from which the classification number in a subdivision record is taken. Subfield ‡z always precedes the associated subfield ‡a in the field.

083 0   ‡z 2 ‡a 94 ‡2 22
‡2 Edition number

The edition number.

083 0 0 345.73/0772 ‡2 23
083 0   ‡a FIC019000 ‡2 bisacsh
‡8 Field link and sequence number

Data that identifies linked fields and may also propose a sequence for the linked fields. Subfield ‡8 may be repeated to link a field to more than one other group of fields. You are responsible for creating and maintaining the link. The system does not create or maintain these links. The structure and syntax of subfield ‡8 is:

      ‡8 [linking number].[sequence number]\[field link type]
083 0   ‡8 1\x ‡a 268.09021 ‡q DE-101 ‡2 23/ger

Note: Subfield ‡8 is defined differently in field 852, where it is used to sequence related holdings records.

Subfield ‡8 has three parts:

The linking number is required. It occurs in subfield ‡8 in all fields to be linked (fields containing the same linking number are linked).

The sequence number is optional and preceded by a period ( . ). It is used to indicate the order in which the linked fields display (lower sequence numbers display before higher ones). If used, it must occur in all subfields ‡8 containing the same linking number.

The field link type is required and preceded by a reverse slash ( \ ). It is a code indicating the reason for the link and it follows the linking number (or sequence number, if present). Field link type is required except when subfield ‡8 is used to link and sequence 85x-87x holdings fields. These are the valid codes:

a (Action). Used to link one or more fields with another field to which the processing or reference actions relate. This code is typically used only when there is more than one 5xx field that relates to another 5xx field.

c (Constituent item). Used in a record for a collection or a single item consisting of identifiable constituent units, to link the fields relating to the constituent units. All other non-linked data elements in the record pertain to the collection or item as a whole.

p (Metadata provenance). Used in a record to link a field with another field containing information about provenance of the metadata recorded in the linked field.

r (Reproduction). Used in a record for a reproduction to identify fields linked because they contain information concerning only the reproduction. Other descriptive information in the record pertains to the original (with the exception of field 007 (Physical Description fixed field), fixed field Form, field 245 subfield ‡h (Title Statement / Medium), and field 533 (Reproduction Note)).

x (General sequencing). Used in a record to make a link between fields to show a sequence between them. The sequence could be one that orders the pieces of a long field that has been broken up, indicates the relative importance of fields within the sequence, or is used for some other sequencing purpose. Use of the sequence number in subfield ‡8 is required when this code is used.

This page last revised: September 2, 2015