Library of Congress >> MARC >> Community Information >> 6XX >> 653

653 - Index Term-Uncontrolled (R)

MARC 21 Community Information - Full

October 2007

First Indicator
Level of index term
# - No information available
0 - No level specified
1 - Primary
2 - Secondary

Second Indicator
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 Codes
$a - Uncontrolled term (R) $6 - Linkage (NR)	$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Index terms that are not derived from a controlled subject heading system/thesaurus.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

First Indicator - Level of index term

Level of the index term. It is used to distinguish primary and secondary descriptors.

# - No information available

No information as to the level of the index term is available.

0 - No level specified

Level of the subject term could be determined but is not specified.

1 - Primary

Index term is a primary term. An index term is considered primary if it covers the main focus or subject content associated with the community information entity.

2 - Secondary

Index term is a secondary term. An index term is considered secondary if it represents a less important aspect associated with the community information entity.

Second Indicator - Type of term or name

Distinguishes uncontrolled index terms by type.

# - 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 CODES

$a - Uncontrolled term

Index term from an uncontrolled subject heading system or thesaurus. Subfield $a is repeatable when more than one index term at the level designated in the first indicator is assigned.


653	1#$aWomen$aDisabled$aSupport groups
653	##$aPregnancy$aChildbirth

$6 - Linkage

See the description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number

See the description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Punctuation - Field 653 does not end with a mark of punctuation or a closing parenthesis unless such punctuation is part of the data.


653	##$aCycling (Iowa)

An uncontrolled term followed by a subsequent term does not end with a mark of punctuation or a closing parenthesis unless the preceding term ends with punctuation as part of the data.


653	1#$aEating disorders, etc.$aMental health

Spacing - No spaces are used in initialisms, acronyms, or abbreviations.


653	##$aW.I.R.E.

CONTENT DESIGNATOR HISTORY

Indicator 2 - Type of term or name [NEW, 2007]

Library of Congress >> MARC >> Community Information >> 6XX >> 653

(03/21/2008)