043 Geographic Area Code

Field definition and scope:

Field 043 contains geographic area codes (GAC) associated with the bibliographic aspect of the classification number and caption in field 153 (Classification Number). The source of the code in subfield $a is MARC Code List for Geographic Areas that is maintained by the Library of Congress. 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.

Field 043 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 043	Geographic Area Code	R
Indicator:
First	Undefined; contains a blank
Second	Undefined; contains a blank

Subfield code:
$a	Geographic area code	R
$b	Local GAC code	R
$c	ISO code	R
$0	Authority record control number or standard number	R
$1	Real World Object URI	R
$2	Source of local code	R
$6	Linkage	NR
$8	Field link and sequence number	R

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:

Field 043 - Geographic Area Code [new, 2011]

Field 043 - Geographic Area Code [changed, 2020]: Field 043 was made repeatable.

Subfield $1 - Real World Object URI [new, 2017]