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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: 8th - 20th centuriesFull-text access to scholarly editions of the complete works of Goethe, Schiller, Kafka and Brecht, as well as 5 centuries of German poetry and a comprehensive library of German literature, philosophy, politics and history from the 8th - 20th centuries.
Publication coverage: 1910 - presentCovers communicable diseases (including HIV/AIDS); tropical diseases; parasitology; human nutrition; community and public health (including chronic diseases, occupational health, health status indicators, the impact of agriculture on health, and cancer epidemiology); medicinal and poisonous plants.
Publication coverage: 1844 - approx. 4 years ago