Dissertations and theses may be found in several sources.
Find dissertations and theses in WorldCat Dissertations, a resource that points to citations/abstracts of dissertations and theses published in the US, Britain, Canada, and other European countries.
Try also Dissertations and Theses A&I.
Both WorldCat Dissertations and Dissertations A&I will require the use of Tipasa, or interlibrary loan to obtain a copy of the dissertation/thesis.
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