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090  Locally Assigned LC-type Call Number (R)

Input Standards

Optional/Optional
1st Indicator  Undefined
blank character Undefined
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards
ǂa Classification number (R) Mandatory/Mandatory
ǂb Local Cutter number (NR) Optional/Optional
ǂe Feature heading (NR) Optional/Optional
ǂf Filing suffix (NR) Optional/Optional

Definition

Call numbers based on the Library of Congress (LC) classification schedules, but assigned locally. Field 090 is not part of the standard MARC 21 Bibliographic format. If you are transcribing LC copy, use field 050 for the LC-assigned call number. Use field 055, field 060, or field 070 for call numbers based on LC classification schedules but assigned by the Library and Archives Canada (LAC), the National Library of Medicine (NLM), or the National Agricultural Library (NAL).

Records may contain field 050 and field 090, but only if field 050 is a recognized word or phrase (e.g., PAR, Newspaper, UNC, or NOT IN LC). Field 090 is not retained in the master record if field 050 contains a call number. It is retained in exported records and records delivered via other services.

If you assign a Library of Congress classification number according to the LC class schedules, prefer field 050 with 1st indicator blank ( blank character ), 2nd indicator 4. If the classification portion of your number does not conform to the LC class schedules, use field 099.

Multiple call numbers

Certain classification choices are recognized to be local decisions. For example, if one user has chosen to class together a monographic series and another library classes it separately, multiple call numbers in the master record may be appropriate. Multiple call numbers are allowed in these circumstances:

  • Classed together number vs. classed separately number for monographic series
  • Literature number vs. PZ number for fiction
  • Bibliography number vs. subject number
  • LC minimal number vs. member call number
  • Geographic classification number vs. subject classification number for maps and atlases

1st Indicator

Undefined. The 1st indicator position is undefined and contains a blank ( blank character ).

blank character

Undefined

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank ( blank character ).

blank character

Undefined

Subfields

 
ǂa Classification number

The class number portion of the locally assigned call number.

090     HV8699
ǂb Local Cutter number

The item number portion of the locally assigned call number, including dates and part designations.

090     HV6089 ǂb .M37 1989a
ǂe Feature heading

A feature heading from a classified catalog. Data in subfield ǂe display in label displays as if they were in subfield ǂb.

090     F495 ǂb .J3 ǂe 1800-1810
ǂf Filing suffix

A filing suffix from a classified catalog. Data in subfield ǂf display in label displays as if they were in subfield ǂb.

090     SD144.A12 ǂb H3 ǂf B.H. Ref.

Indexing

For indexing and searching information, see Searching WorldCat Indexes, field 090.

This page last revised: October 3, 2016