MARC 21 Format for Classification Data: 748: Index Term-Chronological (Network Development and MARC Standards Office, Library of Congress)

Chronological term used as an index term that supplements terms derived from data in the MARC classification record. The term may be referred to in the classification number and caption in field 153 (Classification Number).

For descriptions of some subelements defined for this field, see the field 648 (Subject Added Entry--Chronological Term) section of the MARC 21 Concise Format for Bibliographic Data.

Indicators

First - Undefined: # - Undefined
Second - 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 - Chronological term (NR)

$v - Form subdivision (R)

$x - General subdivision (R)

$y - Chronological subdivision (R)

$z - Geographic subdivision (R)

$0 - Authority record control number or standard number (R): See the description of this subfield in Appendix A: Control Subfields.

$1 - Real World Object URI (R): See the description of this subfield in Appendix A: Control Subfields.

$2 - Source of heading or term (NR)

$3 - Materials specified (NR)

$6 - Linkage (NR): See the description of this subfield in Appendix A: Control Subfields.

$8 - Field link and sequence number (R): See the description of this subfield in Appendix A: Control Subfields.

Examples

748	#7$a1900-1999$2fast
748	#7$a1862$2fast
748	#7$a1800-1899$2fast

748 - Index Term-Chronological (R)

Indicators

Subfield Codes

Examples