All impressions of a work printed from one setting of type. A revised or new edition usually indicates that the text has been changed or new materials added. A work containing information on all subjects is a general encyclopedia. A subject encyclopedia concentrates on all aspects of one subject or field. A citation or record in an index or catalog.
Major categories are author, title, source and subject.
The complete article or other type of publication. Materials published by federal, state, and local government agencies. Usually shelved in a separate area in a library. A word, or phrase placed at the top of a catalog entry or index to indicate some special aspect of the material such as author, subject, title, etc. Materials owned by a library.