A call number is the "address" of a book in the library. PC uses Library of Congress Call Numbers, which may be different from systems you've seen in other libraries. The locations all begin with a letter which represents the broad subject of the book, followed by numbers and other letters. Library staff can direct you to the location of the call number, then you can look for the letter and number on the spine of the book.
KF4528. C67 2004
Reference Books are a good place to look when you're just learning about a topic.
Search GIL-Find as instructed at the right, then use the location links in the left hand column to choose a campus location or electronic book collection.
You can discover and connect to ebooks through GIL-Find. Do a search, then in the left column under Format, select Electronic. You will need your PGSU credentials to read ebooks off campus.
GIL-Find@GSU is the modern version of the library's catalog.