This database includes 2.7 million searchable citations to doctoral dissertation and Master's theses from around the world from 1861 to the present day together with 1.2 million full text dissertations that are available for download in PDF format. Full text has been added since 1997 and strong retrospective full text coverage for older graduate works. Those not available full-text may be ordered privately; they are not normally available through interlibrary loan.