053 - LC Classification Number (R)
MARC 21 Authority - Concise
2007
Single LC classification number or a number span associated with a 1XX heading in an
established heading record or a subdivision record. Source of the classification number
is Library of Congress Classification and/or the LC Classification
Additions and Changes that are maintained by the Library of Congress. The hyphen
(-) between the two class numbers in a range of numbers may be generated based on the
presence of both subfields $a and $b.
Indicators
First - Undefined
# - Undefined
Second - Source of classification number
0 - Assigned by LC
4 - Assigned by agency other than LC
Subfield Codes
$a - Classification number element-single number or beginning number of span (NR)
$b - Classification number element-ending number of span (NR)
$c - Explanatory term (NR)
$5 - Institution to which field applies (R)
$8 - Field link and sequence number (R)
Examples
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| 053 |
#0$aP301$cLinguistics
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| 053 |
#0$aML1160$cHistory
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| 053 |
#0$aMT728$cInstruction and study
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| 053 |
#0$aBX850$bBX875$cDocuments
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