The Libraries own all UGA dissertations, unless someone lost one along the way, but WE do collect them. Dissertations prior to 1999 were in print and after that they are all in electronic format. This example is searching in the catalog, using the advanced search option and only searching in UGA's Libraries.
Search for dissertation as "any field" so the software will look everywhere. Keep the topic in "any field" as well so it's not missed in another field. You may also want to search by major advisor. Again, stick with "any field" and use only the last name.
Most post-1999 titles are available in full-text from GIL. The author sets the limits.
Looking for "how to" books on dissertation writing? Here's one search that may help:
In GIL-FIND Advanced search, search for
Any: dissertation OR "academic writing" [next box down] AND any :"how to" OR write OR writing
You can re-sort the results by date or author or title.
With GIL-FIND you can easily send the results to your citation manager.