Lists over 14 million biomedical articles back to the 1950's. Check out the PubMed Tutorial.

(Formerly Web of Knowledge) Indexes and abstracts science & technology journals (1899+), social science journals (1898+), and arts & humanities journals (1975+) published around the world; offers cited reference searching.

Largest abstract & citation database of peer-reviewed literature in all disciplines. Covers articles, books, conference proceedings & patents. Incorporates smart tools to track, analyze & visualize research.

Full text for 10,000+ scholarly publications in the social sciences, humanities, arts, and sciences from around the world.

Indexes articles in the life sciences and biomedical fields: biology, biochemistry, biotechnology, botany, zoology, agriculture, etc.

Provides indexing & abstracts of articles from almost 300 U.S. and British journals and magazines on astronomy, biology, botany, chemistry, conservation, health & medicine, oceanography, physics, zoology and more.

Indexes 2500 journals and 6000 books in science, technology and the social sciences from Elsevier Science.

Worldwide coverage of 1300+ journals, books and dissertations in the behavioral sciences, psychology, mental health, medicine, etc.