The OSU Library Catalog has subject headings. If you had found a good book on your topic, examine the subject headings for that book below the location/call number box. You can click on these to see other items with that subject ot you can search subject directly as follows.
OSU Library Catalog Subject Search
Examples:
"History" is a subdivision of a subject that can be added after any other term. Examples: Format: branch--history.
Examples:
For mathematics history in a country, region, use for format mathematics--country/region--history.
Examples:
Print Books:
Citation databases allow you to see for each article the items it cited and also the items that have cited it. If you find a great article, use these databases to move both back and forward in time from that article.