MARC 21 Format for Authority Data: 043: Geographic Area Code (Network Development and MARC Standards Office, Library of Congress)

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]

$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: MARC Code Lists for Relators, Sources, Description Conventions.

$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.

043 - Geographic Area Code (NR)

FIELD DEFINITION AND SCOPE

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

INPUT CONVENTIONS

CONTENT DESIGNATOR HISTORY


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