653 Index Term - Uncontrolled

Field definition and scope:

Field 653 contains index terms that are not derived from a controlled subject heading system/thesaurus.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 653	Index Term - Uncontrolled	R
Indicator:
First	Level of index term
#	No information available
0	No level specified
1	Primary
2	Secondary

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	Uncontrolled term	R
$6	Linkage	NR
$8	Field link and sequence number	R

Input conventions:

Content designator history:

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