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Publication coverage: Geology of North America: 1693 - present ; Geology worldwide: 1933 - presentEstablished by the American Geological Institute (AGI) in 1966, GeoRef indexes over several thousand journals in 40 languages as well as books, maps, reports, most U.S. Geological Survey publications, and American and Canadian masters and doctoral theses.
Publication coverage: 1800s - present (varies by country; updated weekly)Explore 66 million patent documents from more than 51 regional and national patent offices. Major national collections include Canada, China, European Patent Office, Japan, Korea, Russia, U.K. and U.S. Advanced functions include chemical structure and biological sequence search; cross-lingual translation search; and national status information.
Publication coverage: Varies by journal titleFull-text access to more than 30 million articles from over 13,000 scholarly journals, from a number of scholarly publishers, such as Cambridge University Press, Elsevier, Oxford University Press, Wiley-Blackwell, Sage Publications, SpringerLINK, Taylor and Francis, and more. Multi-disciplinary in coverage and scope.