151 Heading - Geographic Name (NR) (Variable Data Field)
Field 151 contains a geographic name used as a heading in an established heading record, an established heading and subdivision record, a traced or an untraced reference record, or a reference and subdivision record. In an established heading record, field 151 contains the established form of a geographic name. In records for references, this field contains an unestablished form of a geographic name.
The National level record requirement for this field is Mandatory if applicable.
Field 151 is NOT repeatable.
Guidelines for applying content designators:
The content designators identify the subelements occurring in geographic name headings constructed according to generally accepted cataloging and thesaurus-building conventions [e.g., Anglo-American Cataloguing Rules (AACR 2), Library of Congress Subject Headings (LCSH)].
Jurisdiction names (including those that are ecclesiastical entities) alone or followed by subject subdivisions are X51 geographic names.
A corporate name, a form subheading, a title of a work, and/or a city section name entered under the name of a jurisdiction are contained in the X10 fields.
Geographic names used in phrase subject headings (e.g., Iran in the Koran) are contained in the X50 fields.
A geographic name that is authorized for use only as a subject subdivision part of an extended subject heading is contained in a 181 (Geographic Subdivision) field.
For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:
Position |
Description |
NLR |
Repeatability |
Field 151 |
Heading - Geographic Name |
A |
NR |
Indicator: |
|
|
|
First |
Undefined; contains a blank |
M |
|
Second |
Undefined; contains a blank |
M |
|
|
|
|
|
Subfield code: |
|
|
|
$a |
M |
NR |
|
$g |
A |
R |
|
$v |
A |
R |
|
$x |
A |
R |
|
$y |
A |
R |
|
$z |
A |
R |
|
$6 |
A |
NR |
|
$8 |
O |
R |
See: Examples for this field.
Ambiguous headings (what is considered a "geographic" name)
Second Indicator - Nonfiling characters [obsolete]: The second indicator position was made obsolete in fields 151, 451, and 551 in 1993. The values were: 0-9 (Number of nonfiling characters present).
Subfield $b - Name following place as entry element [obsolete]: Subfield $b was made obsolete in fields 151, 451, and 551 in 1987. A city section name entered under the name of a jurisdiction is contained in an X10 field. Records created before this change may contain an X51 field with a subfield $b for this type of name.
Subfield $g - Miscellaneous information [new, 2014]
Related MARC fields or documents:
X51 Geographic Names - General Information
See also: