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2.
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Washington : U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services, 2000.
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3.
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Denver, CO : U.S. Geological Survey, 1992.
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4.
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Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1989.
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5.
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Washington : U.S. Govt. Print. Off. : for sale by the Supt. of Docs., 1980.
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6.
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Washington : U.S. Govt. Print. Off., 1974.
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7.
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Washington : U.S. Govt. Print. Off., 1969.
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8.
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Washington : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1992.
TN24.C6 G46 ch. A QE91 |
Map It |
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9.
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Washington : U.S. G.P.O., 1991.
TN24.C6 G46 Ch. B-C QE688 |
Map It |
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10.
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Washington : U.S. G.P.O., [1987]
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