Library of Congress >> MARC >> Authority >> 4XX  >> 450

450 - See From Tracing-Topical Term (R)


MARC 21 Authority - full
October 2014

First Indicator Second Indicator
Undefined
# - Undefined

Undefined
# - Undefined


Subfield Codes
  • $a - Topical term or geographic name entry element (NR)
  • $b - Topical term following geographic name entry element (NR)
  • $g - Miscellaneous information (R)
  • $i - Relationship information (R)
  • $v - Form subdivision (R)
  • $w - Control subfield (NR)
         /0 - Special relationship
         /1 - Tracing use restriction
         /2 - Earlier form of heading
         /3 - Reference display
  • $x - General subdivision (R)
  • $y - Chronological subdivision (R)
  • $z - Geographic subdivision (R)
  • $4 - Relationship code (R)
  • $5 - Institution to which field applies (R)
  • $6 - Linkage (NR)
  • $8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Tracing for a topical term see from reference.

Used in an established heading or established heading and subdivision record to trace a see from reference from a topical term not used in an established heading.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

Most of the content designators defined for field 450 are the same as those defined for field 150 (Heading-Topical Term), field 550 (See Also From Tracing-Topical Term), and field 750 (Established Heading Linking Entry-Topical Term). Description, guidelines, and input conventions for shared content designators are given in the X50 Topical Terms-General Information section.

Guidelines for using subfield $w (Control subfield), subfield $i (Relationship information), and subfield $4 (Relationship code) in field 450 are given in the Tracings and References-General Information section.

EXAMPLES

150 ##$aAfrican drama (English)
450 ##$aEnglish drama$xAfrican authors
150 ##$aMusic$xTheory$y15th century
450 ##$aMusic$y15th century$xTheory
150 ##$aGrammar, Comparative and general$xExclamations
450 ##$aExclamations (Linguistics)

Library of Congress >> MARC >> Authority >> 4XX  >> 450
(10/20/2014)
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