Compendex: 1884-present. Scientific and technical engineering research available, covering all engineering disciplines.
INSPEC: World-wide literature (mainly journal articles and conference proceedings papers) in astronomy, physics, electronics and electrical engineering, computers and control, information technology, computer science, control engineering, information technology, manufacturing & mechanical engineering, operations research, material science, oceanography, engineering mathematics, nuclear engineering, environmental science, geophysics, nanotechnology, biomedical technology, and biophysics.
GeoRef: Index to the literature of the geosciences. Topics include: all aspects of geology, solid-earth geophysics, mineralogy, paleontology, petrology, geochemistry, geochronology, energy, and stratigraphy. Contains over 2.9 million references to geoscience journal articles, books, maps, conference papers, reports, and theses.
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University of Michigan-Flint