Library of Congress >> MARC >> Authority >> 1XX >> 180

180 - Heading-General Subdivision (NR)


MARC 21 Authority - Full
October 1999

First Indicator
Undefined
# - Undefined

Second Indicator
Undefined
# - Undefined


Subfield Codes
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Topical, form, or language term used as a heading in a subdivision record.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

Guidelines for applying the content designators defined for field 180 and input conventions are given in the X80 General Subdivisions-General Information section.

EXAMPLES

180 ##$xPeriodicals$vIndexes
180 ##$xAbnormalities
180 ##$xCriticism, interpretation, etc.$xHistory$yMiddle Ages, 600-1500
180 ##$xRussian$vDictionaries
180 ##$xPolitical aspects
180 ##$xRhetoric$xAbility testing
180 ##$xArabic
180 ##$xCivilization$y16th century
180 ##$xHistory$y18th century$xExhibitions
180 ##$xNuclear reactor safety$y1975-1985$zUnited States

(03/04/2008) Contact Us