Library of Congress >> MARC >> Authority >> 7XX  >> 748

748 - Established Heading Linking Entry-Chronological Term (R)


MARC 21 Authority - concise
October 2014

Chronological term that is equivalent to the 148 chronological term or 182 chronological subdivision heading field of the same record. It links headings within a system or from different thesauri or authority files.

See field 148 for descriptions of most content designators.

Indicators

First - Undefined
# - Undefined
Second - Thesaurus   Thesaurus or authority file from which the heading came.
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 - Chronological term (NR)
$i - Relationship information (R)
$v - Form subdivision (R)
$w - Control subfield (NR)
See Heading Linking Entries--General Information
/0 - Link display
a - Link not displayed
b - Link not displayed, field 788 used
c - Link not displayed, non-7XX field used
n - Not applicable
/1 - Replacement complexity
a - Heading replacement does not require review
b - Heading replacement requires review
n - Not applicable
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$0 - Authority record control number or standard number (R)
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of heading or term (NR)
See Heading Linking Entries--General Information
$4 - Relationship code (R)
See Heading Linking Entries--General Information
$5 - Institution to which field applies (R)
See description of this subfield in Appendix A: Control Subfields.
$6 - Linkage (NR)
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number (R)
See description of this subfield in Appendix A: Control Subfields.

Examples

748 #7$a1710-1714$wna$2fast
748 #7$a1800-1899$wnb$2fast
748 #7$a1862$wnb$2fast

Library of Congress >> MARC >> Authority >> 7XX  >> 748
(10/20/2014)
Contact Us