Authority 053
First Indicator Undefined
- - Undefined
Second Indicator 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)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
FIELD DEFINITION AND SCOPE
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.
Classification number(s) may be qualified by a descriptive term when the heading is represented in more than one place in the LC classification schedules. Each classification number or number span associated with a heading is contained in a separate 053 field.
Organizations may conform to Library of Congress practice by applying Subject Cataloging Manual: Classification conventions. GUIDELINES FOR APPLYING CONTENT DESIGNATORS ■ INDICATORS First Indicator - Undefined Contains a blank (#). Second Indicator - Source of classification number Whether the source of the classification number is the Library of Congress or another organization. 0 - Assigned by LC 4 - Assigned by agency other than LC MARC code for the organization is contained in subfield $5.
053 #4$aQH198.H3$5DI ■ SUBFIELD CODES $a - Classification number element-single number or beginning number of span
100 1#$aGrimes, Martha 053 #0$aPS3557.R48998
130 #0$aBook of Mormon$xAntiquities 053 #0$aBX8627
180 ##$xRhetoric 053 #0$aP301$cLinguistics $b - Classification number element-ending number of span Ending number of number span when the beginning number of the span is contained in subfield $a.
151 ##$aUnited States$xHistory$yRevolution, 1775-1783 053 #0$aE201$bE298 $c - Explanatory term Descriptive term or phrase that specifies the topic of the classification number. Normally, such a phrase is used to differentiate between two or more class numbers associated with the heading. The parentheses that enclose the phrase or term may be generated for display.
150 ##$aString quartets 053 #0$aML1160$cHistory 053 #0$aMT728$cInstruction and study
110 2#$aCatholic Church$xHistory$vSources 053 #0$aBX850$bBX875$cDocuments $5 - Institution to which field applies See description of this subfield in Appendix A: Control Subfields.
053 #4$aHD1694.S6$5DI $6 - Linkage See description of this subfield in Appendix A: Control Subfields. $8 - Field link and sequence number See description of this subfield in Appendix A: Control Subfields. INPUT CONVENTIONS Capitalization - Alphabetic characters in the classification number portion of the field are generally uppercase. Spacing - Any spaces that are desired as part of the call number must be input. Display Constants - [hyphen associated with the content of subfield $b] ( ... ) [parentheses associated with the content of subfield $c] Hyphen between the two class numbers in a number span in subfields $a and $b and parentheses that may enclose the explanatory term in subfield $c are not carried in the MARC record. They may be system generated as display constants associated with the content of subfields $b and $c, respectively.
Content designated field :
053 #0$aBX850$bBX875$cDocuments
Display example:
BX850-BX875 (Documents) CONTENT DESIGNATOR HISTORY Indicator 2 - Source of Classification Number [NEW, 1995] Prior to 1995, field 053 was an agency-assigned field and contained only classification numbers assigned by the Library of Congress.