730 Index Term - Uniform Title

Field definition and scope:

Field 730 contains a uniform title used as an index term that supplements terms derived in the MARC record. The uniform title 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 uniform title 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 uniform title index term. Terms not controlled by a thesaurus or authority file are contained in field 753 (Index Term - Uncontrolled).

Field 730 is repeatable.

Guidelines for applying content designators:

Field 730 parallels the 630 Subject Added Entry field in the bibliographic format. The indicators and subfield codes below were created from the information in field 630. Examples of field 730 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: X30 (Uniform Titles - General Information) and 630 (Subject Added Entry - Uniform Title).

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

Position	Description	Repeatability
Field 730	Index Term - Uniform Title	R
Indicator:
First	Nonfiling characters
0	No nonfiling characters present
1-9	Number of nonfiling characters present

Second	Thesaurus
0	Library of Congress Subject Headings
1	LC subject headings for children's literature
2	Medical Subject Headings
3	National Agricultural Library subject authority file
4	Source not specified
5	Canadian Subject Headings
6	Répertoire des vedettes-matière
7	Source specified in subfield $2

Subfield code:
$a	Uniform title	NR
$d	Date of treaty signing	R
$f	Date of a work	NR
$g	Miscellaneous information	R
$h	Medium	NR
$i	Explanatory text	R
$k	Form subheading	R
$l	Language of a work	NR
$m	Medium of performance for music	R
$n	Number of part/section of a work	R
$o	Arranged statement for music	NR
$p	Name of part/section of a work	R
$r	Key for music	NR
$s	Version	NR
$t	Title of a work	NR
$v	Form subdivision	R
$x	General subdivision	R
$y	Chronological subdivision	R
$z	Geographic subdivision	R
$0	Authority record control number or standard number	R
$1	Real World Object URI	R
$2	Source of heading or term	NR
$3	Materials specified	NR
$6	Linkage	NR
$8	Field link and sequence number	R

See: Examples for this field.

Content designator history:

Subfield $g - Miscellaneous information [changed, 2014]: In 2014, subfield $g was made repeatable.

Subfield $0 - Record control number [redefined, 2010]

Subfield $1 - Real World Object URI [new, 2017]