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1
2
by John, David A.
[Reston, Va.] : [Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey ; [Books and Open-File Reports Section, distributor], 1994
[Reston, Va.] : [Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey ; [Books and Open-File Reports Section, distributor], 1994
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3
4
by Fridrich, Chris J.
[Denver, CO] : U.S. Dept. of the Interior, U.S. Geological Survey, 1998
[Denver, CO] : U.S. Dept. of the Interior, U.S. Geological Survey, 1998
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5
by Throckmorton, Constance K.
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1993
[Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1993
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6
by Reheis, Marith C.
Denver, CO : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor], 1992
Denver, CO : U.S. Dept. of the Interior, Geological Survey : [Books and Open-File Reports Section, distributor], 1992
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7
by Fridrich, Chris J.
Denver, CO : U.S. Department of the Interior, U.S. Geological Survey, 1998
Denver, CO : U.S. Department of the Interior, U.S. Geological Survey, 1998
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8
by Swadley, W. C.
Denver, CO : U.S. Dept. of the Interior, Geological Survey, 1984
Denver, CO : U.S. Dept. of the Interior, Geological Survey, 1984
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9
by Hurtubise, D. O., Du Bray, E. A.
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Books and Open-File Report Sales, U.S. Geological Survey, 1992
Washington : Denver, CO : U.S. G.P.O. ; For sale by the Books and Open-File Report Sales, U.S. Geological Survey, 1992
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10
by Morrison, Roger B. (Roger Barron), 1914-
Washington [D.C.] : U.S. Govt. Print. Off., 1964
Washington [D.C.] : U.S. Govt. Print. Off., 1964
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11
12
13
by Du Bray, E. A.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2007
Version 1.0.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2007
Version 1.0.
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