Library of Congress >> MARC >> Authority >> 01X-09X  >> 080

080 - Universal Decimal Classification Number (R)


MARC 21 Authority - full
May 2017

First Indicator Second Indicator
Type of edition
# - No information provided
0 - Full
1 - Abridged

Undefined
# - Undefined


Subfield Codes
  • $a - Universal Decimal Classification number (NR)
  • $b - Item number (NR)
  • $x - Common auxiliary subdivision (R)
  • $0 - Authority record control number or standard number (R)
  • $2 - Edition identifier (NR)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Classification number associated with a 1XX heading in an established heading record. Number is taken from the Universal Decimal Classification. scheme.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Type of edition

Whether the class number is from the full or the abridged edition of the classification schedules. The actual edition number is contained in subfield $2.

# - No information provided
0 - Full

Class number is from a full edition.

1 - Abridged

Class number is from an abridged edition.

Second Indicator - Undefined

Undefined and contains a blank (#).

SUBFIELD CODES

$a - Universal Decimal Classification number

080 ##$a001.81$2[edition information]
080 ##$a971.1/.2
080 ##$a631.321:631.411.3$2[edition information]

$b - Item number

Item number portion of the UDC number.

$x - Common auxiliary subdivision

Number that qualifies the concept represented by the main UDC number.

Common auxiliary subdivisions, such as those for form (e.g., dictionaries), are attached to a main UDC number preceded or delimited by some kind of facet indicator. Examples of commonly used subdivision delimiters are parentheses, brackets, an apostrophe, or a hyphen.

080 ##$a821.113.1$x(494)$2[edition information]
080 ##$a94$x(474)$x”19"$x(075)$2[edition information]
150 ##$aArte prerrománico$zAsturias (Comunidad Autónoma)
080 0#$a7.033.4$x(460.12)$22000
150 ##$aDiagnástico por imagen
080 0#$a616$x073.7$22000

$0 - Authority record control number or standard number

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

$2 - Edition identifier

Edition number, date, or other textual designation of the edition of UDC used to compose the classification number.

080 ##$a82:111.852$21993
080 ##$a821.113.4-14$21998
150 ##$aSistemas de telecomunicación
080 0#$a621.39$22000
150 ##$aMadrid
080 0#$a(460.27M.)$22000

$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.


CONTENT DESIGNATOR HISTORY

$0 - Authority record control number or standard number [NEW, 2017]

Library of Congress >> MARC >> Authority >> 01X-09X  >> 080
(05/17/2017)
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