Library of Congress >> MARC >> Authority >> 01X-09X >> 043

043 - Geographic Area Code (NR)


MARC 21 Authority - full
September 2011

First Indicator Second Indicator
Undefined
# - Undefined

Undefined
# - Undefined


Subfield Codes
  • $a - Geographic area code (R)
  • $b - Local GAC code (R)
  • $c - ISO code (R)
  • $0 - Authority record control number or standard number (R)
  • $2 - Source of local code (R)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Geographic area codes (GAC) associated with the 1XX heading in an established heading record or a subdivision record. Source of the code in subfield $a is MARC Code List for Geographic Areas. The source of a local code in subfield $b is indicated in subfield $2. The source of codes in subfield $c is ISO 3166, Codes for the representation of names of countries and their subdivisions - Part 1 : Country codes or Part 2 : Country subdivision codes.

More precise identification of geographic areas associated with a geographic name heading may be contained in field 052 (Geographic Classification Code).


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

SUBFIELD CODES

$a - Geographic area code

Seven-character MARC code for a geographic area. Each geographic area code associated with a heading is contained in a separate subfield $a.

100 1#$aFord, Gerald R.,$d1913-$xMuseums$zMichigan
043 ##$an-us-mi
110 1#$aFrance.$tTreaties, etc.$gPoland,$d1948 Mar. 2
043 ##$ae-fr---$ae-pl---
130 #0$aBible$zGermany
043 ##$ae-gx---
150 ##$aCanadian Grand Prix Race
043 ##$an-cn---
150 ##$aWater resources development$zKenya
043 ##$af-ke---
151 ##$aAmazon River
043 ##$asa-----
181 ##$zOntario
043 ##$an-cn-on

$b - Local GAC code

Code is formulated by attaching a local subentity code to an already established geographic area code. Each local GAC associated with an item is contained in a separate subfield $b. It is recommended that standard GACs also be included in subfield $a for international exchange and understanding.

043 ##$as-bl---$bs-bl-ba$2 [source of local code]
[Item represented by record related to the state of Bahia in Brazil.]

$c - ISO code

Code taken from the International Organization for Standardization's Codes for the representation of names of countries and their subdivisions - Part 1: Country codes or Part 2 : Country subdivision codes (ISO 3166).

043 ##$cus
[Contains an ISO 3166-1 code for the United States with no corresponding MARC GAC code]

$0 - Authority record control number or standard number

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

$2 - Source of local code

Code that identifies the source from which the local code was assigned. Used only when subfield $b is used to indicate a local GAC code. Code from: Geographic Area Code and Term Source Codes.

$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

Structure - All alphabetical characters are input in lowercase. Embedded and trailing hyphens are carried in the MARC record. A detailed description of the structure and use of GACs is contained in MARC Code List for Geographic Areas.


CONTENT DESIGNATOR HISTORY

$c - ISO code [NEW, 2001]

Subfield $c was defined to accommodate ISO 3166 country codes.

$0 - Authority record control number or standard number [NEW, 2011]

Library of Congress >> MARC >> Authority >> 01X-09X >> 043
(09/01/2011)
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