Book excerpt: **** Cited in BCL3. Arranged in four main sections--general library reference, social sciences, science and technology, and humanities--the guide annotates atlases, bibliographies, catalogs, compendiums, dictionaries, directories, guides, handbooks, indexes, and other reference aids issued by the government. Bibliographic citations include series notations, LC card numbers, ISBNs, and ISSNs, OCLC numbers, Monthly catalog numbers, GPO sales stock numbers (S/N), prices current as of date of publication, SuDocs numbers, depository library shipping list numbers, item numbers, and LC classification numbers. Annotation copyrighted by Book News, Inc., Portland, OR