1.
|
Washington : U.S. G.P.O., 1989.
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2.
|
[Denver, Colo.?] : The Survey : [For sale by Open-File Reports Section, 1994]
I 19.76: 94-419 |
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3.
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[Reston, Va.?] : The Survey ; [Denver, Colo. : Open-File Reports Section, distributor], 1994.
I 19.76: 94-421 |
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4.
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[Reston, Va.] : The Survey, 1998.
I 19.76: 98-32 |
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5.
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Reston, VA : The Survey, 1999.
I 19.76: 99-536 |
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6.
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[Reston, VA] : U.S. Dept. of the Interior, U.S. Geological Survey, [1997]
I 19.76: 97-510 |
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7.
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[Reston, Va.?] : The Survey, 1997.
I 19.76: 97-143 |
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8.
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Boulder, Colo. : Geological Society of America, c1989.
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9.
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[Washington, D.C.?] : U.S. Dept. of the Interior, U.S. Geological Survey, 1987.
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10.
|
Reston, VA : The Survey ; [Denver, Colo. : USGS Information Services], 1993.
I 19.76: 93-288 |
|