The PSU Library Catalog contains books, articles, videos, theses and dissertations, and archival materials from the PSU Library collection as well as from other academic libraries.
This tutorial on searching the PSU Library Catalog will provide you with information about its search features while you are actually using the catalog.
Searching by subject headings can be a very productive way to find books on your topic. Subject headings are fixed vocabulary used to describe books. Complementing searches done with keywords by utilizing searching by subject headings can greatly improve the number of relevant books you find and can also help further contextualize your topic.