Library books at CSUSB are cataloged with Library of Congress Subject Headings. To explore items catalogued under the subject of sculpture, you may want to use the following subjects in your searches: sculpture, sculptors, glass sculpture, and ceramic sculpture.
Though the online catalog is a great tool, sometimes it's helpful to go and browse the resources in the library. If you choose to do this, you might want to start in the following call number ranges: NB1-50 (general sculpture), NB60-1115 (history of sculpture), NB1160-1195 (sculpture designs and techniques).