753 Index Term - Uncontrolled

Field definition and scope:

Field 753 contains uncontrolled index terms to supplement terms derived from data in the MARC classification record that are not derived from a controlled subject heading system/thesaurus that provide subject access to a classification number or span in field 153 (Classification number) or an index term in field 154 (General Explanatory Index Term).

This field may be used to provide additional terms not appearing in the classification data record, such as synonyms or permutations of phrases, to provide references between related terms, and to provide vocabulary control using see references. Such index terms are not controlled by a thesaurus or other authority file, such as Library of Congress Subject Headings (LCSH) or Medical Subject Headings (MeSH). Index terms that are controlled are recorded in fields 700, 710, 711, 730, 750 or 751.

An uncontrolled index term in field 753 is contained in the record for the classification number or general index term to which it refers. If the index term is associated with a classification number, the record contains field 153 (Classification Number). If an index term has no classification number associated with it or with any of its subtopics and thus cannot be contained in a record with a classification number in field 153, an index term record may be created (008/06 Kind of record, code c) containing the index term in field 154 (General Explanatory Index Term), with the associated text in field 753.

Field 753 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 753	Index Term - Uncontrolled	R
Indicator:
First	Undefined; contains a blank

Second	Type of term or name
#	No information provided
0	Topical term
1	Personal name
2	Corporate name
3	Meeting name
4	Chronological term
5	Geographic name
6	Genre/form term

Subfield code:
$a	Index term	R
$b	Index term - succeeding level	R
$d	Index term referred from	R
$e	Example class number	R
$i	Explanatory text	R
$s	See also reference term	NR
$t	See also reference term - succeeding level	R
$u	Use reference term	NR
$v	Use reference term - succeeding level	R
$6	Linkage	NR
$8	Field link and sequence number	R

See: Example for this field.

Input conventions:

Use of terms

Display constants

Content designator history:

Second Indicator - Type of term or name [new, 2007]