A subset of the WorldCat union catalog database containing over 8 million records describing dissertations, theses, and published material based on theses held by over 57,000 libraries worldwide (including most libraries in North America, and the national libraries of Australia and many Western European countries). Incorporates all records from the Research Libraries Group (RLG) Union Catalog (RLIN). Includes many titles from European countries not included in ProQuest Dissertations & Theses.
Current cumulative file. (Describes library-held dissertations and theses published from the 16th century to the present.)