The GeoRef database, established by the American Geosciences Institute (AGI) in 1966, provides access to the most comprehensive geoscience literature of the world. GeoRef contains millions of references to geoscience maps, serial, and non-serial literature. The database includes references to all publications of the U.S. Geological Survey. Master's theses and doctoral dissertations from US and Canadian universities are also covered. Coverage for North American resources starts in 1669, whereas worldwide coverage starts in 1933.

This multidisciplinary database provides unparalleled and comprehensive coverage of the environmental sciences. Abstracts and citations are drawn from over 10,000 serials including scientific journals, conference proceedings, reports, monographs, books and government publications.

Comprehensive coverage of literature across all fields of science and social science. Provides access to more than 850 of Elsevier's primary research journals, which focus on scientific, medical, biomedical and technical areas.

(Indexing: Science Citation Index Expanded, 1900+; Social Sciences Citation Index, 1900+; Arts & Humanities Citation Index, 1975+). It provides bibliographic citations from over 5,600 scholarly, peer-reviewed journals. Search by subject, author, source, affiliation, address and cited reference.

Springer-Verlag publishes journals, books, and book series in the sciences including: chemical sciences, computer science, engineering, environmental sciences, geosciences, life sciences, mathematics, medicine, physics.

(Indexing: 1969+) The most comprehensive bibliographic database of technology and engineering research literature, containing citations and abstracts of articles and technical reports from over 5000 engineering journals and conferences. Compendex covers the fields of chemical and process engineering (15%), computers and data processing (12%), applied physics (11%), electronics and communications (12%). The remainder of its coverage is civil and mechanical engineering.

Full text issues of scholarly journals in the social sciences, humanities, and general sciences, some journals have coverage back to the 1600s.

Comprehensive information on 12 of the Earth's major biomes and its many component ecosystems. Includes entries on land and water biomes, animal life, food web, plant and animal adaptations, endangered species and human effects of the biome.