Contains citations for books, journals, manuscripts, maps, music scores, sound recordings, films, computer files, newspapers, slides, videotapes, etc., in a variety of languages. WorldCat is the OCLC Online Union Catalog, and contains tens of  millions of records in all disciplines from approximately 12,000 libraries worldwide.

Materials Indexed: Audio, Books, Maps, Theses & Dissertations, Video Database Type: Index Interface Language: English Materials Language: English Subject: Library Science Broad Category: Multidisciplinary, Reference