450 - See From Tracing-Topical Term (R)
MARC 21 Authority - Concise
2007
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.
See field 150 for
descriptions of most content designators.
Indicators
First - Undefined
# - Undefined
Second - Undefined
# - Undefined
Subfield Codes
$a - Topical term or geographic name entry element (NR)
$b - Topical term following geographic name entry element (NR)
$i - Reference instruction phrase (NR)
$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)
$5 - Institution to which field applies (R)
$8 - Field link and sequence number (R)
Examples
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450 |
##$aEnglish drama$xAfrican authors
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450 |
##$aMusic$y15th century$xTheory
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450 |
##$aExclamations (Linguistics)
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