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653  Index Term--Uncontrolled (R)

Record Type

BIB

Input Standards

Field (Full/Minimal)
Optional/Optional
1st Indicator  Level of subject
blank character No information provided
0 No level specified
1 Primary
2 Secondary
2nd Indicator  Type of term or name
blank character No information provided
0 Topical term
1 Personal name
2 Corporate name
3 Meeting name
4 Chronological term
5 Geographical term
6 Genre/form term
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards (Full/Minimal)
ǂa Uncontrolled term (R) Mandatory/Mandatory
ǂ0 Authority record control number or standard number (R) Optional/Optional
ǂ1 Real World Object URI (R) Optional/Optional
ǂ5 Institution to which field applies (NR) Required if applicable/Required if applicable
ǂ6 Linkage (NR) System supplied/System supplied
ǂ7 Data provenance (R) Optional/Optional
ǂ8 Field link and sequence number (R) Optional/Optional

Definition

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

1st Indicator

Level of subject. The level of the subject entry. Use the 1st indicator to distinguish primary and secondary descriptors.

 
blank character

No information provided. No information as to the level of the subject term is provided.

653     Stamp collecting (United States)
 
0

No level specified. The level of the subject term could be determined, but is not specified.

653 0   Contract theory
653 0   Corporate governance
 
1

Primary. A subject covers the main focus or subject content of the material.

653 1   Ice, Sculpture, moulds, etc. ǂa Children's games
 
2

Secondary. A subject covers a less important aspect of the content of the material.

653 2   Peg puzzles
653 2   Wood puzzles
653 2   Construction sets

2nd Indicator

Type of term or name. Distinguishes uncontrolled index terms by type.

 
blank character

No information provided

653     Great Britain ǂa Welfare services ǂa Policies compared with ǂa policies in United States, history
653     United States ǂa Welfare services ǂa Policies compared with ǂa policies in Great Britain, history
 
0

Topical term

653   0 Elections
 
1

Personal name

653   1 Plath
 
2

Corporate name

653   2 UNICEF
 
3

Meeting name

653   3 Convention on the Civil Aspects of International Child Abduction (The Hague, 25 October 1980)
 
4

Chronological term

653   4 1950-1984
 
5

Geographical term

653   5 Hamburg
 
6

Genre/form term

653   6 Coming of age stories

Subfields

 
ǂa Uncontrolled term

An index term from an uncontrolled thesaurus or subject heading system. Repeat subfield ǂa when more than one index term at the level designated in the 1st indicator is assigned. Repeat field 653 for each index term when subfield ǂ0 or ǂ1 is present.

653     Man ǂa Eyes ǂa Diseases
653     Bagras Castle ǂ0 (pleiades)786609869
ǂ0 Authority record control number or standard number

For information about subfield ǂ0, see Control Subfields.

653     AcousTech Mastering ǂ0 (discogs)l265260
653     Saco Lake ǂ0 (gnis)872606 ǂ0 (geonames)5092045 ǂ1 https://sws.geonames.org/5092045/
ǂ1 Real World Object URI

For information about subfield ǂ1, see Control Subfields.

653     Russian invasion of Ukraine ǂ1 http://www.wikidata.org/entity/Q110999040
653     Melbourne General Post Office ǂ1 http://www.wikidata.org/entity/Q6811781
653     The Scottish Salmon Company ǂ1 http://www.bbc.co.uk/things/1fa5ed44-55c0-4d90-8349-b51d28fadd14#id
ǂ5 Institution to which field applies

For information about subfield ǂ5, see Control Subfields.

ǂ6 Linkage

Data that link fields when non-Latin script is entered. This subfield is system supplied and does not appear in OCLC online displays. Do not manually add subfield ǂ6. For more information about subfield ǂ6, see Control Subfields.

ǂ7 Data provenance

For information about subfield ǂ7, see Data Provenance Subfields.

ǂ8 Field link and sequence number

For information about subfield ǂ8, see Control Subfields.

Indexing

For indexing and searching information, see Searching WorldCat Indexes, field 653.

MARC 21

For more information, including content designator history, see MARC 21 Format for Bibliographic Data, field 653.

This page last revised: October 5, 2023