GeoRef (ProQuest) This link opens in a new window
The GeoRef database provides access to geoscience literature from around the world. It contains geoscience maps, journal articles, non-journal literature, and 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.