WorldCat lists many dissertations, theses and published material from around the world. To filter your search results to only include disserations, perform the search, then select "Thesis/Dissertation" from the Format filter in the left-hand column.
ProQuest'sDissertations and Theses includes dissertations written at many universities. Not as exhaustive as Worldcat and does not include dissertations from Harvard or MIT. Does not include Masters theses. More full text available.
Obtaining copies of dissertations written outside of UF:
UF faculty/staff/students may download full text of over 600,000 theses from ProQuest Dissertations & Theses: Full Text. Full text is available for approximately one third of the theses indexed in the database.
Search WorldCat Dissertations and Theses for links to free full text or indications that a copy may be borrowed from another library.
Try using the ILLiad Interlibrary Loan (ILL) service if you are a current student/faculty/staff at UF.
You may be able to purchase a copy from ProQuest Dissertation Express, in print or online form.
You may need to contact the author or the issuing institution/department.
Health Education and Behavior Theses and Dissertations