If you are looking for a thesis by a particular author, you can do an Author Search in the Online Book Catalog. If you are interested in a particular subject, try doing a Title Keyword Search like this:

Please note that you type the word theses, not thesis, then combine it with the word niagara and a subject word or phrase.

If you need a thesis, you will need to ask a staff member at the Reference Desk or the Circulation Desk to retrieve the thesis for you. If the Library owns more than one copy of the thesis, you can check out the second copy. If only one copy exists, you have to read the thesis in the Library.