Catholic University's liaison librarians have included discipline-specific OER resources in many of their subject guides. To access OER resources by discipline, choose a subject from the list below.
Open textbooks are licensed under an open copyright license and are free for use by students, faculty, and the public. They may be distributed in traditional print format as well as e-book and audio formats. Many of the general search engines and repositories offer access to open textbooks, but here are some more specific resources: