Whenever there is a choice between classing a bibliography in the Z class or in a subject-specific class, MIT classes the bibliography in the subject-specific class. However, when cataloging with copy, if only a Z class number is available on the copy, use the Z class number.
For example, if this call number occurs on an OCLC record:050 00 Z6028 |b .W67 |a GA300Choose the following call number instead:
090 bb GA300 |b .W67
This LC exception applies to these classification ranges:
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Drafted by Helen Ploss and Eric Celeste 1991-1993; maintained by Gordon Thomas and last updated on 970911.