Authority 072

Kezdőlap - A MARC21 authority formátum - Authority 01X-09X

First Indicator

Undefined

'#' - Undefined

Second Indicator

Code source

'#' - No information provided

0 - NAL subject category code list

7 - Source specified in subfield $2

Subfield Codes

$a - Subject category code (NR)

$x - Subject category code subdivision (R)

$2 - Code source (NR)

$6 - Linkage (NR)

$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Code for the subject category that is associated with the 1XX field in an established heading record or a node label record.

Code indicates the relative position of the heading in a particular hierarchical arrangement in the thesaurus specified by the value in the second indicator position or in subfield $2 (Code source). Field 072 is repeated for each location of the heading in a specific thesaurus and for multiple subject category codes when a heading is common to different thesauri.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Undefined

Undefined and contains a blank (#).

Second Indicator - Code source

Source of the subject category code.

'#' - No information provided

Source of the subject category code is the same as the subject heading system/thesaurus identified in 008/11 (Subject heading system/thesaurus).

008/11 c

[code indicating MeSH]

150 ##$aAtrophy

072 ##$aC23.$x739.$x102

0 - NAL subject category code list

Source of the subject category code is AGRICOLA Subject Category Codes with Scope Notes that is maintained by NAL.

008/11 d

[code indicating NAL]

150 ##$aContamination and toxicology

072 #0$aQ200

7 - Source specified in subfield $2

SUBFIELD CODES

$a - Subject category code

Code for the broad subject category to which the heading belongs in a hierarchically-arranged thesaurus.

008/11 c

[code indicating MeSH]

150 ##$aLibraries, Hospital

072 ##$aL1.$x346.$x596.$x463

072 ##$aN2.$x278.$x354.$x560

072 ##$aN4.$x452.$x442.$x468

008/09 e

[node label record]

008/11 c

[code indicating MeSH]

150 ##$aNeoplastic Processes

072 ##$aC4.$x697

$x - Subject category code subdivision

Level of specificity within the broader category coded in subfield $a.

008/11 c

[code indicating MeSH]

151 ##$aLibya

072 ##$aZ1.$x58.$x266.$x513

072 ##$aZ1.$x586

$2 - Code source

MARC code that identifies the thesaurus used to assign the subject category code when the second indicator position of this field contains value 7. Code from: Subject Category Code Source Codes.

$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].

Kezdőlap - A MARC21 authority formátum - Authority 01X-09X