Library of Congress >> MARC >> Bibliographic >> 6XX >> 656

656 - Index Term-Occupation (R)


MARC 21 Bibliographic - Full
October 2007

First Indicator
Undefined
# - Undefined

Second Indicator
Source of term
7 - Source specified in subfield $2


Subfield Codes
$a - Occupation (NR)
$k - Form (NR)
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$0 - Authority record control number (R)
$2 - Source of term (NR)
$3 - Materials specified (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Index term that is descriptive of the occupation (including avocation) reflected in the contents of the described materials.

Not used to list the occupations of the creators of the described materials, unless those occupations are significantly reflected in the materials themselves or bear some relationship to the materials. Standard published lists are used for the occupational terms and the list is identified in subfield $2 (Source of term).


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Undefined
Undefined and contains a blank (#).
Second Indicator - Source of term
Contains value 7 which indicates that the source of the index term is contained in subfield $2.

SUBFIELD CODES

$a - Occupation
Term specifying the occupation reflected in the contents of the described material.
656 #7$aAnthropologists.$2[thesaurus code]
656 #7$aEducators.$2[thesaurus code]
$k - Form
Specific kinds of materials are distinguished by an examination of their physical character, subject of their intellectual content, or the order of information within them (e.g., daybooks, diaries, directories, journals, memoranda, etc.).
656 #7$aMigrant laborers.$kSchool district case files.$2[thesaurus code]
$v - Form subdivision
Form subdivision that designates a specific kind or genre of material as defined by the thesaurus being used. Subfield $v is appropriate only when a form subject subdivision is added to an index term for occupation.
$x - General subdivision
Subject subdivision that is not more appropriately contained in subfield $v (Form subdivision), subfield $y (Chronological subdivision), or $z (Geographic subdivision). Subfield $x is appropriate only when a general topical subject subdivision is added to a term.
$y - Chronological subdivision
Subject subdivision that represents a period of time. Subfield $y is appropriate only when a chronological subject subdivision is added to a term.
$z - Geographic subdivision
Geographic subject subdivision. Subfield $z is appropriate only when a geographic subject subdivision is added to a term.
$0 - Authority record control number
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of term
MARC code that identifies the source list from which the index term was assigned. It is used only when the second indicator position contains value 7 (Source specified in subfield $2). Code from: Occupation Term Source Codes.
$3 - Materials specified
Part of the described materials to which the field applies.
$6 - Linkage
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Punctuation - Subfield preceding subfield $2 in field 656 ends with a mark of punctuation or a closing parenthesis.
656 #7$aDentists.$2 [thesaurus code]

Index term followed by a subject subdivision does not end with a mark of punctuation unless the preceding term ends with an abbreviation, initial/letter, open date, or other data that end with a mark of punctuation.
656 #7$aChauffeurs$zFrance.$2 [thesaurus code]
Spacing - No spaces are used in initialisms, acronyms, or abbreviations.
Display Constant
- [dash associated with the content of subfield $v, $x, $y, and $z]
Dash ( - ) that precedes a subdivision in an extended subject heading is not carried in the MARC record. It may be system generated as a display constant associated with the content of subfield $v, $x, $y, and $z.
Content designated field :
656 #7$aPlastic surgeons$zLos Angeles (Calif.)$2[thesaurus code]
Display example: 
Plastic surgeons-Los Angeles (Calif.)

CONTENT DESIGNATOR HISTORY

$0 - Authority record control number [NEW, 2007]

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