Policies

MSUL follows the Library of Congress classification system, applying the latest schedules unless institutional needs justify exceptions.
The LC class number on any bibliographic copy will be used unless it is a duplicate to the MSU collection or is an error.
- Call numbers in copy records in either the 050 or 090 fields are acceptable without alteration, with the exception of call number types and classes specifically prohibited.
Different call numbers can be included in shared records.
- Partner libraries may wish to use different call numbers for the same resource
- The partner creating the record will use the indexed bib record call number for their call number display.
- The partner adding their copy will use the call number field in the item record for call number display.
Call numbers must be unique.
- The exact same call number in monograph bibliographic records, one for an MSU title and the other for a partner library, are not considered duplicate call numbers.
- Call numbers with different years at the end are not considered duplicate call numbers.

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