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2by Conger, Randall W.“...U.S. Geological Survey ;...”
Published 1999
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3by Conger, Randall W.“...U.S. Geological Survey,...”
Published 1997
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4
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5by Conger, Randall W.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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6by Sloto, Ronald A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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7by Conger, Randall W.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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8by Low, Dennis J. (Dennis James)“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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9by Conger, Randall W.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2000
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10by Bird, Philip H.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2002
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11by Conger, Randall W.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2000
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12by Low, Dennis J. (Dennis James)“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2001
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13by Conger, Randall W.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1998
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14“...U.S. Department of the Interior, U.S. Geological Survey,...”
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15by Low, Dennis J. (Dennis James)“...U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, Colo. :...”
Published 2001
Government Document Book