Includes millions of searchable citations to dissertation and theses from around the world from 1861 to the present day together with over a million full text dissertations that are available for download in PDF format.
The database offers full text for most of the dissertations added since 1997 and strong retrospective full text coverage for older graduate works.
Check Worldcat.org to find out what libraries have a copy and place an Interlibrary Loan request for it or for a scanned section of it.
The advanced search in Worldcat.org allows you to limit your results by "Content:" to Thesis/dissertations.