1.
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Denver : U.S. Geological Survey, 1984.
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2.
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[Washington, D.C.] : U.S. Dept. of the Interior ; Alexandria, VA : Geological Survey, 1984-1985.
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3.
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Washington : U.S. G.P.O. ; Alexandria, VA : For sale by the Branch of Distribution, U.S. Geological Survey, 1984.
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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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[Denver, Colo.] : U.S. Geological Survey, [1990]
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6.
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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, 1989.
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7.
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Washington : U.S. G.P.O., 1990.
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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, 1989.
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9.
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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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10.
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Washington : U.S. D.G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, Federal Center, 1990.
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