1.
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[Austin, Tex.] : U.S. Geological Survey, 1992.
GB1025.T4 L635 1992 |
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2.
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Austin, Tex. : The Survey ; Denver, CO : Copies can be purchased from Books and Open-File Reports Section, 1993.
I 19.76: 93-86 |
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3.
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[Austin, Tex.] : U.S. Geological Survey ; Denver, CO : Copies can be purchased from Books and Open-File Reports Section, 1993.
I 19.76: 93-81 |
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4.
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Albuquerque, N.M. : [U.S. Dept. of the Interior, U.S. Geological Survey], 1999.
I 19.76: 99-271 |
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5.
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El Paso, Tex. : PDX Press in cooperation with the National Association of RSVP Directors, Inc. ; [Washington, D.C. : U.S. Environmental Protection Agency], 1992.
EP 1.8: G 91/4 |
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6.
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Austin, Tex. : The Survey ; Denver, CO : For sale by Open-File Reports Section, 1994.
I 19.76: 94-345 |
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7.
|
Austin, Tex. : The Survey ; Denver, CO : Copies can be purchased from Open-File Reports Section, 1994.
I 19.76: 94-346 |
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8.
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[Reston, Va.] : U.S. Geological Survey, 1990.
I 19.76: 90-132 |
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9.
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[Reston, Va.] : U.S. Geological Survey, 1991.
I 19.76: 91-95 |
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10.
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[Reston, Va.] : U.S. Geological Survey, 1991.
I 19.76: 91-94 |
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