1.
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Washington, D.C. : U.S. G.P.O. ; Denver CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1991.
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2.
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Denver : U.S. Geological Survey, 2003.
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3.
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Washington, D.C. : U.S. G.P.O. ; Denver, CO : For sale by the U.S. Geological Survey, 1991.
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4.
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[Reston, Va.?] : The Survey, 1996.
I 19.76: 96-537 |
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5.
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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, 1987.
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6.
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[Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section, 1988.
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7.
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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, 1987.
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8.
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[Denver, CO] : U.S. Dept. of the Interior, Geological Survey, 1990.
I 19.76: 90-410 |
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9.
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[Washington, D.C.] : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 19912.
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10.
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Washington : U.S. Govt. Print. Off., 1976.
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