1.
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Washington, DC : U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Map Distribution, 1994.
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2.
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Austin : University of Texas Press, c2002.
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3.
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Menlo Park, CA : U.S. Dept. of the Interior, U.S. Geological Survey ; [Denver, Colo. : Branch of Information Services, distributor], 1999.
I 19.76: 99-569 |
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4.
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Washington : U.S. G.P.O., 1986.
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5.
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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, 1990.
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6.
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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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7.
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Washington : U.S. G.P.O., 1987.
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8.
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Washington : U.S. Govt. Print. Off., 1977.
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9.
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Washington : U.S. G.P.O., 1990.
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10.
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Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 1984.
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