Lot United States Geological Survey Professional Paper USGS Geology Paleontology
United States Geological Survey Professional Paper by U.S. Dept. of the Interior: Eocene Rocks, Fossils, and Geologic History, Teton Range, Northwestern Wyoming, 1978 (932-B). United States Geological Survey Professional Paper by U.S. Dept. of the Interior: Miocene Marine Diatoms From the Choptank Formation, Calvert County, Maryland, 1976 (910).