Grey literature databases identify resources that are key to research and scholarship. Many are open resources that go through a quality control process before they are published.
Definitions are scholarly dictionaries, encyclopedias and handbooks that help define terms and provide additional context. A select list includes:
Open Education Resources(OERs) are digital ebooks and learning objects that can be used as open textbooks on a wide variety of general and disciplinary subjects.
Includes Oxford Quick Reference of core subject, quotation, and language dictionaries and Oxford Reference Library of companions and multi-volume encyclopedias for longer, in-depth, essays and specialist definitions.
In-depth, peer-reviewed essays and introductions by leading scholars in Archaeology, Business & Management, Classical Studies, Criminology, Economics & Finance, History, Law, Linguistics, Literature, Music, Neuroscience, Philosophy, Physical Sciences, Political Science, Psychology, Religion, and Sociology