Dissertation Abstracts OnDisc consists of a set of compact discs containing citations to dissertations and the software, ProQuest, which is used to search those discs. The discs are arranged in chronological order, with the first disc covering 1861–1980. This first disc contains citations only, with the author, title, date, subject of the dissertation with a reference to the appropriate volume and page of Dissertation Abstracts, and the UMI order number, if available. From 1980 on, the discs also contain the abstract of the dissertation, if available. The discs are available in at least two versions: the one supplied for this review consists of six discs with the discs divided chronologically and by section, with Section A: Humanities and Social Sciences and Section B: Sciences. The set of discs in the reviewer's library consists of four discs, only divided chronologically. The reviewer assumes that the further division is designed to allow subscribers to choose Section A or Section B only.
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