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上星期上課上了LIBRARY OF CONGRESS COLLECTIONS POLICY STATEMENTS的Library and Information Science, and Bibliography (Classes Z and ZA)

Two categories of resources (“subject” and “format”) are included in this Collections Policy Statement.
The first are the subject categories Library and Information Science (classes Z through Z1000.5) and Information Resources (General) (class ZA).
The second category of resources covered by this Statement is Bibliography, which is subdivided into:General (Z1001-1140), including descriptive and analytical treatments dealing with books asphysical objects;National (Z1201-4980);Subject (Z5000-7999); andPersonal (Z8001-8999).