Orbis (Yale Library Catalog)
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WorldCat
Millions of records for books and other materials cataloged by libraries across the United States, and abroad.

ProQuest Dissertations & Theses Global
Find dissertations and thesis citations from around the world from 1861 to present. Full text is available for most recent Yale dissertations. Full text is available for most of the dissertations added since 1997 from other universities.

DART-Europe E-theses Portal
DART-Europe is a partnership to provide researchers with a single European portal for the discovery of electronic theses and dissertations.