Library of Congress >> MARC >> Authority >> 7XX >> 755

755 - Established Heading Linking Entry-Genre/Form Term (R)

MARC 21 Authority - Full
October 2002

First Indicator
# - Undefined

Second Indicator
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 - Genre/form term as entry element (NR)
$v - Form subdivision (R)
$w - Control subfield (NR)
    /0 - Link display
    /1 - Replacement complexity
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$0 - Record control number (R)
$2 - Source of heading or term (NR)
$5 - Institution to which field applies (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)


Genre/form term that is equivalent to the 155 genre/form term or 185 form subdivision heading field of the same record. It links headings within a system or from different thesauri or authority files.


Most of the content designators defined for field 755 are the same as those defined for field 155 (Heading-Genre/Form Term), field 455 (See From Tracing-Genre/Form Term), and field 555 (See Also From Tracing-Genre/Form Term). Description, guidelines, and input conventions for shared content designators are given in the X55 Genre/Form Terms-General Information section.

Guidelines for applying the second indicator, subfield $w (Control subfield), and subfield $2 (Source of heading or term) in field 755 are given in the 7XX Heading Linking Entries-General Information section.


Equivalent genre/form terms from different thesauri:

008/09 a
[established heading record]
008/11 a
[code indicating LCSH]
155 ##$aPeriodicals$vIndexes
755 #6$aPériodiques$vIndex
[Heading from RVM]
008/09 a
[established heading record]
008/11 v
[code indicating Répertoire de vedettes-matière]
155 ##$aPériodiques$vIndex
755 #0$aPeriodicals$vIndexes
[Heading from LCSH]

Topical terms used within a thesaurus both as an established heading and as a form subdivision:

008/09 d
[subdivision record]
008/11 r
[code indicating AAT]
185 ##$vatlases
755 #7$aatlases$0 [record control number] $2aat
008/09 a
[established heading record]
008/11 r
[code indicating AAT]
155 ##$aatlases
785 #7$vatlases$0 [record control number] $2aat

(03/06/2008) Contact Us