Library of Congress >> MARC >> Authority >> 01X-09X  >> 083

083 - Dewey Decimal Classification Number (R)


MARC 21 Authority - full
June 2024

First Indicator Second Indicator
Type of edition
0 - Full
1 - Abridged
7 - Other edition specified in subfield $2

Source of classification number
0 - Assigned by LC
4 - Assigned by agency other than LC


Subfield Codes
  • $a - Classification number element-single number or beginning number of span (NR)
  • $b - Classification number element-ending number of span (NR)
  • $c - Explanatory term (NR)
  • $y - Table sequence number for internal subarrangement or add table (R)
  • $z - Table identification-table number (NR)
  • $0 - Authority record control number or standard number (R)
  • $1 - Real World Object URI (R)
  • $2 - Edition information (NR)
  • $5 - Institution to which field applies (R)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Single Dewey classification number or a number span associated with a 1XX heading in an established heading record or a subdivision record. Source of the classification number is the Dewey Decimal Classification, accessed through electronic or printed versions.

Classification number(s) may be qualified by a descriptive term when the heading is represented in more than one place in the Dewey classification schedules. In a subdivision record, the field also contains the number of the table from which the classification number is taken. Each classification number or number span associated with a heading is contained in a separate 083 field. The second indicator values distinguish between content actually assigned by the Library of Congress and content assigned by an organization other than LC. The organization is identified in subfield $5.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Type of edition

Indicates the edition from which the Dewey Decimal classification is taken.

0 - Full

Class number is from the full edition.

150 ##$aAviation medicine
083 00$a616.980213$222
1 - Abridged

Class number is from the abridged edition.

150 ##$aAviation medicine
083 10$a616.9$213
7 - Other edition specified in subfield $2

The edition is specified in subfield $2 (Edition information).

Second Indicator - Source of classification number

Whether the source of the classification number is the Library of Congress or another organization.

0 - Assigned by LC

151 ##$aChina
083 00$a951$222
4 - Assigned by agency other than LC

MARC code for the organization is contained in subfield $5.

150 ##$aTransliteration
083 04$a411$222$5[organization code]

SUBFIELD CODES

$a - Classification number element-single number or beginning number of span

Single class number or the first number in a number span.

130 #0$aBible.$lEnglish.$sAuthorized
083 00$a220.5203$222
151 ##$aChina
083 10$a951$213
181 ##$zChina
083 00$z2$a51$222

$b - Classification number element-ending number of span

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

150 ##$aWorld War, 1939-1945$vPersonal narratives
083 00$a940.5481$b940.5482$220

$c - Explanatory term

Descriptive term or phrase that specifies the topic of the class number. Normally used to differentiate between two or more class numbers associated with the heading. Parentheses that enclose the phrase or term may be generated for display.

150 ##$aGold
083 00$a669.22$cInterdisciplinary$222
083 00$a549.23$cMineralogy$222
083 00$a553.41$cEconomic geology$222

$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, succeeding integers are used for any following add tables found at that number.

$z - Table identification-table number

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.

180 ##$xData processing
083 00$z1$a0285$222
185 ##$vDictionaries
083 00$z1$a03$cSubject dictionaries$222
083 00$z4$a3$cLanguage dictionaries$222

$0 - Authority record control number or standard number

See description of this subfield in Appendix A: Control Subfields.

$1 - Real World Object URI

See description of this subfield in Appendix A: Control Subfields.

083 00$a362.29/6$223/eng/20190402$1https://entities.oclc.org/worldcat/ddc/E36hxQKtFdbKrbpm3XkqkQVCQw

$2 - Edition information

Information on the edition from which the DDC number was assigned. If DDC numbers are assigned from more than one edition, each DDC number or number span is contained in a separate 083 field. If the DDC number is assigned from a printed version, record edition number (use “23” for print-on-demand), a slash (/), the language of the edition, a slash (/), and the year of publication or printing. If a DDC number is assigned from an electronic version, record edition number (use “23” or “22” for WebDewey, as appropriate), a slash (/), the language of the edition, a slash (/), and the date on which the DDC number was assigned by the cataloger. Languages are recorded according to the three-character codes in the MARC Code List for Languages. Dates are recorded according to Representation of Dates and Times (ISO 8601) in the pattern yyyymmdd.

083 00$a362.29/6$223/eng/20190402

$5 - Institution to which field applies

See description of this subfield in Appendix A: Control Subfields.

$6 - Linkage

See description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number

See description of this subfield in Appendix A: Control Subfields.


INPUT CONVENTIONS

Display Constants

- [hyphen associated with the content of subfields $a and $b]
( ... ) [parentheses associated with the content of subfield $c]
T [abbreviation associated with the content of subfield $z]
- [dash associated with the content of subfields $z and $a]
dc [abbreviation associated with the content of subfield $2]

Hyphen between the two class numbers in a number span in subfields $a and $b; the parentheses that may enclose an explanatory term in subfield $c in an established heading record; the abbreviation T before the table number in subfield $z; the dash between the table number and the class number in subfields $z and $a; and the abbreviation dc before the edition number in subfield $2 are not carried in the MARC record. They may be system generated as display constants associated with the content of subfields $a, $b, $c, $z, and $2, respectively.

 
Content designated field:
083 00$a346.3$b346.9$cSpecific jurisdictions and areas$222
Display example:
346.3-346.9 (Specific jurisdictions and areas) dc22
 
Content designated field:
083 00$z4$a5$222
Display example:
T4-5 dc22

CONTENT DESIGNATOR HISTORY

Indicator 1 - Type of edition [CAN/MARC only]
# - No edition information recorded [OBSOLETE, 1997]
2 - Abridged NST version [OBSOLETE, 1997]
7 - Other edition specified in subfield $2 [NEW, 2011]
Indicator 2 - Source of Classification Number [NEW, 1995]

Prior to 1995, field 083 was an agency-assigned field and contained only classifications numbers assigned by the Library of Congress.

$y - Table sequence number for internal subarrangement or add table [NEW, 2008]
$0 - Authority record control number or standard number [NEW, 2024]
$1 - Real World Object URI [NEW, 2024]
$2 - Edition number [RENAMED, 2021] [REDESCRIBED, 2021]

Library of Congress >> MARC >> Authority >> 01X-09X  >> 083
(08/28/2024)
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