Updated monthly. Contains more than 2 million doctoral dissertations and master's theses. Provides full text for many dissertations and theses, including most done after 1997. All subject areas are covered. The database includes more than 90 percent of the doctoral dissertations accepted each year in North America with selective coverage for other parts of the world. Each dissertation published since July 1980 includes a 350-word abstract written by the author. Master's theses published since 1988 include 150-word abstracts. Only bibliographic citations are available for earlier years. More than 55,000 new citations are added to the database every year. Many dissertations from The University of Texas at Austin are included in the database, though theses from the University are only rarely included.