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1by Heakin, Allen J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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2by Carter, Janet M.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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3by Greene, Earl A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1999
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4by Anderson, Mark T. (Mark Theodore), 1952-“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1999
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5by Amundson, Frank D.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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6by Niehus, Colin A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1999
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7by Koch, Neil C.“...U.S. Geological Survey, U.S. Dept. of the Interior,...”
Published 1980
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8by Greene, Earl A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1990
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9by Lawrence, Stephen J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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10by Roddy, W. R.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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11by Greene, Earl A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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12by Smith, C. J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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13Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Government Document Book -
14by Sando, Steven Kent, 1956-“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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15by Lindgren, Richard J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1992
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16Published 1990“...U.S Dept. of the Interior, U.S. Geological Survey,...”
Government Document Microform Book -
17by Nichols, Thomas C.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1992
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18by Greene, Earl A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1993
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19by Freeman, Joyce E.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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20by Baird, J. K.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1993
Government Document Microform Book