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1by Knobel, LeRoy L.“...U.S. Geological Survey ;...”
Published 1995
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2by Knobel, LeRoy L.“...U.S. Geological Survey,...”
Published 2008
Report:
Summary:
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3by Bartholomay, Roy C.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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4by Orr, Brennon R.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
Government Document Book -
5Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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6by Bartholomay, Roy C.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1993
Government Document Microform Book -
7by Ott, Douglas S.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1994
Government Document Microform Book -
8by Tucker, Betty J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1995
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9by Knobel, LeRoy L.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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10Published 1999“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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11by Knobel, LeRoy L.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2006
Abstract:
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12by Mann, Larry J.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1988
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13by Mann, Larry J.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1987
Government Document Microform Book -
14by Knobel, LeRoy L.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1988
Government Document Microform Book -
15by Bartholomay, Roy C.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1989
Government Document Microform Book -
16by Bartholomay, Roy C.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1989
Government Document Microform Book