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The Bishop Ash Bed (Middle Pleistocene) and some older (Pliocene and Pleistocene) chemically and min

Izett, Glen Arthur, 1928- author.
[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1988. 1988

The Chinle (Upper Triassic) and Sundance (Upper Jurassic) Formations in north-central Colorado : a d

Pipiringos, G. N. (George Nicholas), 1918- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969. 1969

Fission-track and K-Ar ages of natural glasses : study of the problems associated with fission-track

Naeser, Charles W., author.
[Reston, Va.] : United States Department of the Interior, Geological Survey, 1980. 1980

Geology and mineral deposits of the Carlile quadrangle, Crook County, Wyoming

Bergendahl, M. H. (Maximilian Hilmar), 1921- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1961. 1961

Geology and uranium deposits of the Strawberry Hill quadrangle, Crook County, Wyoming

Davis, Robert E., 1924- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1962. 1962

Geology of the Hot Sulphur Springs quadrangle, Grand County, Colorado

Izett, Glen Arthur, 1928- author.
Washington : U.S. Department of the Interior, Geological Survey, 1968. 1968

Geology of the Paradise quadrangle, Cache County, Utah,

Mullens, Thomas E. (Thomas Ellison), 1924- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1964. 1964