Often it is easier to browse the shelves for inspiration.
Use these Classification Numbers to find philosophy-related books:
|General, By time and place
(e.g., metaphysics & epistemology)
|Philosophy of Science
The official database of record for graduate research (digital masters theses and dissertations). To find older USD theses and dissertations, search the catalog.
Search through Google's collection of scanned scholarly books. Not all are available free-text online.