Field definition and scope:

Field 651 contains a geographic name used as a subject added entry.

Subject added entries are assigned to a community information record to provide access according to generally accepted cataloging and thesaurus-building rules (e.g., Library of Congress Subject Headings (LCSH), Medical Subject Headings (MeSH)).  Field 651 may be used by any institution assigning subject headings based on the lists and authority files identified in the second indicator position or in subfield $2 (Source of heading or term).

Jurisdiction names used alone or followed by subject subdivisions are contained in 651 fields.  A corporate name, a title of a work, and/or a city section name entered under the name of a jurisdiction are contained in a 610 corporate name field.  A name of a jurisdiction that represents an ecclesiastical entity is contained in a 610 field.

Field 651 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 651

Subject Added Entry - Geographic Name

R

Indicator:

 

 

First

Undefined; contains a blank

 

 

 

 

Second

Thesaurus

 

0

Library of Congress Subject Headings

 

1

LC subject headings for children's literature

 

2

Medical Subject Headings

 

3

National Agricultural Library subject authority file

 

4

Source not specified

 

5

Canadian Subject Headings

 

6

Répertoire de vedettes-matière

 

7

Source specified in subfield $2

 

 

 

 

Subfield code:

 

 

$a

Geographic name

NR

$v

Form subdivision

R

$x

General subdivision

R

$y

Chronological subdivision

R

$z

Geographic subdivision

R

$0

Authority record control number

R

$2

Source of heading or term

NR

$3

Materials specified

NR

$6

Linkage

NR

$8

Field link and sequence number

R

Input conventions:

Ambiguous headings

Punctuation

Spacing

Display constant

Initial articles

Content designator history:

Subfield $0 - Authority record control number  [new, 2007]

Related MARC fields or documents:

880  Alternate Graphic Representation

Source Codes for Vocabularies, Rules, and Schemes:

Subject Heading and Term Source Codes

See also:

6XX  Subject Access Fields

Variable Data Fields