1.
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2.
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[Denver, Colo.] : The Survey : [Books and Open-File Reports Section, distributor], 1992.
I 19.76: 92-341 |
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3.
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Denver, CO : The Survey : Books and Open-File Reports Section, distributor, 1993.
I 19.76: 93-3 |
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4.
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[Denver, Colo.] : The Survey : [Books and Open-File Reports Section, distributor], 1991.
I 19.76: 90-495 |
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5.
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[Denver, Colo.] : The Survey : [Books and Open-File Reports Section, distributor], 1991.
I 19.76: 91-124 |
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6.
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[Denver, CO] : U.S. Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1993.
I 19.76: 93-203 |
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7.
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[Denver, Colo. : The Survey : [Books and Open-File Reports Section, distributor], 1993.
I 19.76: 93-190 |
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