MARC 21 Concise Format for Classification Data: 753: Index Term-Uncontrolled (Network Development and MARC Standards Office, Library of Congress)

This is an ARCHIVED VERSION of the 2009/2010 electronic edition of the MARC 21 Concise Formats. Please see loc.gov/marc/concise/ for the most up-to-date version of the electronic MARC 21 Concise Formats.

Uncontrolled index terms to supplement terms derived from data in the MARC classification record that are not derived from a controlled subject heading system/thesaurus that provide subject access to a classification number or span in field 153 (Classification number) or an index term in field 154 (General Explanatory Index Term).

Second - Type of term or name

# - No information provided

0 - Topical term

1 - Personal name

2 - Corporate name

3 - Meeting name

4 - Chronological term

5 - Geographic name

6 - Genre/form term

$a - Index term (R)

Terms comprising the entry in an index to a classification schedule. If the entry consists of several terms at several levels, additional levels are contained in subfield $b (Index term--succeeding level)

$b - Index term-succeeding level (R)

Term at a level after the first in an index term. May also be used for the succeeding level of an index term referred from, which is contained in subfield $d.

$d - Index term referred from (R)

Index term that refers to another index term, either as a see or see also reference. When subfield $d is used, the field also contains either subfield $s (See also reference term) or subfield $u (Use reference term).

$e - Example class number (R)

$i - Explanatory text (R)

$s - See also reference term (NR)

Term to which a see also reference is made from the term in subfield $d (Index term referred from).

$t - See also reference term-succeeding level (R)

Term at a level after the first in a see also reference term.

$u - Use reference term (NR)

Term under which a classification number citation will appear when the term in subfield $d (Index term referred from) or field 154 (General Explanatory Index Term) contains an unused term.

$v - Use reference term-succeeding level (R)

Term at a level after the first under which a classification number citation will appear when the term in subfield $d (Index term referred from) or field 154 (General Explanatory Index Term) contains an unused term.

$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.


753	##$aWolf children in literature$bAmerican$bCollections $bProse


753	##$aDemand$bforecasts $bsecondary industries


753	##$iForm number 20 in any NLM schedule where applicable


753	##$iIn a particular area, with the subject of the original study, e.g. Heart Diseases,$eWG 210


753	##$dSheltered employment$sEmployment services$tsocial services


753	##$dDairy products$bproduct safety$sFood$tproduct safety


753	##$aMental illness


753	##$dCompulsive lying$sMental illness


753	##$aEmployment services$bsocial services


753	##$aSheltered employment

753 - Index Term-Uncontrolled (R)