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Founded in British Columbia, this site offers a variety of openly licensed textbooks for undergraduate studies.
This page showcases and provides access to open textbooks made available by the College of the Canyons, including some specializing in water technology.
These free textbooks are authored by faculty members at the Grand Valley State University.
This page lists Lumen Learning's free online courses and the accompanying textbooks.
This non-profit organization based at Rice University publishes free peer-reviewed textbooks written by professional content developers. It has created subject-related hubs for instructors to share teaching resources.
Established by State University of New York libraries, this initiative publishes a growing list of peer-reviewed open access textbooks.
This is a collection of free, openly licensed textbooks published by the Portland State University Library.
Saylor Academy hosts a collection of openly licensed textbooks and open online courses.
With the facilitation of Affordable Learning Georgia, openly licensed textbooks on different subjects have been published by the University System of Georgia. Ancillary materials are also available.
Maintained by Fox Valley Technical College, this portal provides access to learning objects in the fields of health, science, mathematics, technology, and general education