MARC 21 Format for Authority Data: 762: Established Heading Linking Entry-Medium of Performance Term (Network Development and MARC Standards Office, Library of Congress)

762 - Established Heading Linking Entry-Medium of Performance Term (R)

MARC 21 Authority - full

December 2017

First Indicator	Second Indicator
Undefined # - Undefined	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 de vedettes-matière 7 - Source specified in subfield $2

First Indicator

Second Indicator

Undefined
# - Undefined

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 de vedettes-matière
7 - Source specified in subfield $2


Subfield Codes
$a - Medium of performance term as entry element (NR) $i - Relationship information (R) $w - Control subfield (NR) /0 - Link display /1 - Replacement complexity $0 - Authority record control number or standard number (R) $1 - Real World Object URI (R)	$2 - Source of heading or term (NR) $4 - Relationship (R) $5 - Institution to which field applies (R) $6 - Linkage (NR) $8 - Field link and sequence number (R)

Subfield Codes

$a - Medium of performance term as entry element (NR)
$i - Relationship information (R)
$w - Control subfield (NR)
/0 - Link display
/1 - Replacement complexity
$0 - Authority record control number or standard number (R)
$1 - Real World Object URI (R)

$2 - Source of heading or term (NR)
$4 - Relationship (R)
$5 - Institution to which field applies (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Medium of performance term that is equivalent to the 162 medium of performance term of the same record. It links headings within a system or from different thesauri or authority fields.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

Most of the content designators defined for field 762 are the same as those defined for field 162 (Heading-Medium of Performance Term), field 462 (See From Tracing-Medium of Performance Term), and field 562 (See Also From Tracing-Medium of Performance Term). Description, guidelines, and input conventions for shared content designators are given in the X62 Medium of Performance Term-General Information section.

Guidelines for applying the second indicator, subfield $w (Control subfield), subfield $2 (Source of heading or term), subfield $i (Relationship information), and subfield $4 (Relationship) in field 762 are given in the 7XX Heading Linking Entries-General Information section.

■ EXAMPLES

162	##$aviolin
762	#7$aVioline$2gnd

CONTENT DESIGNATOR HISTORY

Field 762 - Established Heading Linking Entry-Medium of Performance Term [NEW, 2013]

(12/18/2017)