751 Index Term - Geographic Name (R) (Variable Data Field)
Field definition and scope:
Field 751 contains a geographic name used as an index term that supplements terms derived in the MARC record. The geographic name may be referred to in the classification number and caption in field 153 (Classification Number).
The field may be used to link a classification number with a related controlled geographic name heading. The values in the second indicator position or the data in subfield $2 (Source of heading or term) identify the subject heading system or thesaurus used by an institution to formulate the geographic name index term. Terms not controlled by a thesaurus or authority file are contained in field 753 (Index Term - Uncontrolled).
Field 751 is repeatable.
Guidelines for applying content designators:
Field 751 parallels the 651 Subject Added Entry field in the bibliographic format. The indicators and subfield codes below were created from the information in field 651. Examples of field 751 are provided in this section. Guidelines for the input conventions and the source for the content designators are in MARC 21 Format for Bibliographic Data: 651 (Subject Added Entry - Geographic Name).
For indicator and subfield code definitions and examples, and designator repeatability, see table below:
Position |
Description |
Repeatability |
Field 751 |
Index Term - Geographic Name |
R |
Indicator: |
|
|
First |
Undefined; contains a blank |
|
|
|
|
Second |
|
|
0 |
|
|
1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
|
|
6 |
|
|
7 |
|
|
|
|
|
Subfield code: |
|
|
$a |
NR |
|
$i |
R |
|
$v |
R |
|
$x |
R |
|
$y |
R |
|
$z |
R |
|
$0 |
R |
|
$1 |
R |
|
$2 |
NR |
|
$3 |
NR |
|
$6 |
NR |
|
$8 |
R |
See: Examples for this field.
Subfield $0 - Record control number [redefined, 2010]
Subfield $1 - Real World Object URI [new, 2017]
Related MARC fields or documents:
MARC 21 Format for Bibliographic Data:
651 Subject Added Entry - Geographic Name
MARC Code List for Organizations
Source Codes for Vocabularies, Rules, and Schemes:
Subject Heading and Term Source Codes
See also: