Field definition and scope:

Field 052 contains a geographic classification code for a geographic area associated with a 151 field in an established heading record or a 181 field in a subdivision record.  This code can provide more precise geographic access than the codes contained in field 043 (Geographic Area Code).  Each main geographic area code and any related subarea codes associated with the heading are contained in a separate 052 field.  Subfield $d (Populated place name) may contain the name of the geographic area.

The geographic classification code is derived from the Library of Congress Classification--Class G and expanded Cutter number lists for place names.  Cutter numbers for place names in the United States are also published in Geographic Cutters.  The Library of Congress maintains the Library of Congress Classification, Geographic Cutters, and the Cutter number lists.

The National level record requirement for this field is Optional.

Field 052 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:

Position

Description

NLR

Repeatability

Field 052

Geographic Classification

O

R

Indicator:

 

 

 

First

Code source

M

 

#

Library of Congress Classification

A

 

1

U.S. Dept. of Defense Classification

A

 

7

Source specified in subfield $2

A

 

 

 

 

 

Second

Undefined; contains a blank

M

 

 

 

 

 

Subfield code:

 

 

 

$a

Geographic classification area code

M

NR

$b

Geographic classification subarea code

A

R

$d

Populated place name

O

R

$0

Authority record control number or standard number

 

R

$2

Code source

A

NR

$6

Linkage

A

NR

$8

Field link and sequence number

O

R

Input conventions:

Punctuation

Capitalization

Content designator history:

First Indicator - Code source:  In 2000, the first indicator was given its present definition.  Records created prior to this change may contain a code # meaning undefined.

Value 0 - U.S. Dept. of Defense Classification  [obsolete, 2002]:  The first indicator value 0 (U.S. Dept. of Defense Classification) was made obsolete.  Value 1 was defined as U.S. Dept. of Defense Classification to replace it.

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

LC Guidelines:

 052  Geographic Classification

Related MARC fields or documents:

043  Geographic Area Code

Geographic Cutters

Library of Congress Classification--Class G

Source Codes for Vocabularies, Rules, and Schemes:

Classification Scheme Source Codes

See also:

0XX  Numbers and Codes

Variable Data Fields