Suggested Topics within your search.
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by Fitch, John A. (John Andrews), 1881-1959
Pittsburgh, Pa. : University of Pittsburgh Press, 1989
Pittsburgh, Pa. : University of Pittsburgh Press, 1989
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by Girty, George Herbert, 1869-1939
Washington : United States Department of the Interior, Geological Survey, 1939
Washington : United States Department of the Interior, Geological Survey, 1939
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by Pennell, Elizabeth Robins, 1855-1936
Philadelphia and London : J.B. Lippincott Co., 1914
Philadelphia and London : J.B. Lippincott Co., 1914
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by Drake, Avery Ala, 1927-
Washington : United States Department of the Interior, Geological Survey, 1978
Washington : United States Department of the Interior, Geological Survey, 1978
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by Epstein, Jack Burton, 1935-, Epstein, Anita G., 1937-
Washington : United States Department of the Interior, Geological Survey, 1972
Washington : United States Department of the Interior, Geological Survey, 1972
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by Miller, R. Adam, Grant, Robert R., Leopold, Luna B. (Luna Bergere), 1915-2006, Patrick, Ruth, Troxell, John
Washington : United States Department of the Interior, Geological Survey, 1971
Washington : United States Department of the Interior, Geological Survey, 1971
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by Butts, Charles, 1863-1946, Moore, Elwood S., 1878-
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1936
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1936
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by Bascom, F. (Florence), 1862-1945, Stose, George Willis, 1869-1960
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1938
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1938
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by Strotmeyer, Stephen J.
Harrisburg, PA : Pennsylvania Dept. of Health, 1999
Harrisburg, PA : Pennsylvania Dept. of Health, 1999
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by Berryhill, Henry L., Jr. (Henry Lee), 1921-2013, Kent, Bion H. (Bion Huntley), 1925-, Schweinfurth, Stanley P.
Washington : United States Department of the Interior, Geological Survey, 1971
Washington : United States Department of the Interior, Geological Survey, 1971
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