073 Subdivision Usage (NR) (Variable Data Field)
Field 073 contains a code specifying the topical term or geographic name with which a subdivision may be used in a particular thesaurus. Field 073 is appropriate only in a subdivision record or an established heading and subdivision record. The code may correspond to all or a portion of the subject category code contained in field 072 (Subject Category Code) in an established heading record for a topical term or geographic name.
The National level record requirement for this field is Optional.
Field 073 is NOT 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 073 |
Subdivision Usage |
O |
NR |
Indicator: |
|
|
|
First |
Undefined; contains a blank |
M |
|
Second |
Undefined; contains a blank |
M |
|
|
|
|
|
Subfield code: |
|
|
|
$a |
M |
R |
|
$z |
M |
NR |
|
$6 |
A |
NR |
|
$8 |
O |
R |
See: Example for this field.
Related MARC fields or documents:
880 Alternate Graphic Representation
Source Codes for Vocabularies, Rules, and Schemes:
Subject Category Code Source Codes
See also: