ProQuest Dissertations and Theses
ProQuest Dissertations and Theses (PQDT) is an online database that indexes, abstracts, and provides full-text access to dissertations and theses. The database includes over 2.4 million records and covers 1637 to the present.  It is produced by ProQuest and was formerly known as ProQuest Digital Dissertations. The bibliographic database (without full text dissertations) is known as Dissertations Abstracts or Dissertations Abstracts International .
PQDT annually publishes more than 90% of all dissertations submitted from accredited institutions of higher learning in North America as well as from colleges and universities in Europe and Asia. Over the past 60 years, PQDT has amassed more than 1.4 million titles beginning with the first U.S. dissertation accepted by a university (Yale) in 1861. ProQuest began digitizing dissertations in 1997 from a microform archive.
- ProQuest Dissertations and Theses Database
- ProQuest Dissertations & Theses Global
- "ProQuest Digital Dissertations: UMI begins to digitize dissertations". Information Intelligence Online Libraries and Microcomputers 15 (2): 12. Feb 1997.
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