Oxford Reference Online - Politics and Social Sciences: Collection contains reference works covering Countries of the World, Law, the Mind, Political Biography, Politics of the World, Psychology, Science, Technology, and Society, Sociology, and the United States Government.
PsycINFO: Citations, abstracts, bibliographies, tests and evaluations from professional and academic literature in psychology and related disciplines 1887-
PubMed: Abstracted articles from medical journals 1966-
Web of Science (Science Citation Index): Allows searching the journal literature in all branches of the sciences not only by subject or author, but also by cited author or article. 1955-