See also discipline sources, e.g., if you are interested topics in the history of psychology, see the psychology research guide, etc. For fulltext, click on . More information about Get it! [Get it! may not be available in all the sources listed below.]
Tip: check out Research Alerts, a guide to creating automated alerts (email or RSS feeds) from databases, catalogs, search engines, and ejournals.
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Some other specialized sources:
Digitization of older materials is producing useful collections, searchable and available fulltext on the Internet; see Medical Heritage Library, Internet Archive, Biodiversity Heritage Library, Google Books, and much more.