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The geologic story of the Aspen region : mines, glaciers and rocks

Bryant, Bruce, 1930- author.
[Reston, Va.] : United States Department of the Interior, U.S. Geological Survey, 1986. 1986

Geology of the Linville Quadrangle, North Carolina-Tennessee : a preliminary report

Bryant, Bruce, 1930- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1962. 1962

Geology of the Lloyd quadrangle, Bearpaw Mountains, Blaine County, Montana

Schmidt, Robert G. (Robert Georges), 1923- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1961. 1961

Geology of the Maddux quadrangle, Bearpaw Mountains, Blaine County, Montana

Bryant, Bruce, 1930- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1960. 1960

Geology of the northern part of the Harcuvar complex, west-central Arizona

Bryant, Bruce, 1930-
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2008. 2008

Isotopic ages of rocks in the northern Front Range, Colorado

Wilson, Anna B. (Anna Burack)
Denver, Colo. : U.S. Geological Survey, 2006. 2006

Mineral resources of the Gore Range-Eagles Nest primitive area and vicinity, Summit and Eagle Counti

Tweto, Ogden, 1912-1983 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970. 1970

Mountains, glaciers, and mines : the geological story of the Blue River Valley, Colorado, and its su

Kellogg, Karl S., author.
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2016. 2016