The process of coordinating selection and de-selection activities within a library. Controlled Vocabulary Prescribed terms with fixed meanings that bring together variations of a term, synonyms, and related subjects under one heading. The intellectual ownership of material in any form. Corporate author A body or institution such as an association or a government agency responsible for published material. Descriptors The controlled vocabulary used in periodical indexes.
Descriptors vary from index to index.
Dictionary A reference book that defines words, terms or other material, either general or specific. A published work that contains essays or other material by several authors. The contents are often identified in indexes. All copies of a work published at the same time with the same layout. Encyclopedia A reference book that explains concepts and terms.