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1by Bradley, Michael W.“...U.S. Geological Survey ;...”
Published 1985
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2by Kay, Robert T.“...U.S. Geological Survey,...”
Published 2006
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5by Eckhardt, David A.“...U.S. Geological Survey,...”
Published 2007
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6by Dodge, Kent A.“...U.S. Geological Survey,...”
Published 2007
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7by Langland, Michael J.“...U.S. Geological Survey,...”
Published 2007
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12Published 2008“...U.S. Geological Survey,...”
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13by McHale, Michael R.“...U.S. Geological Survey,...”
Published 2007
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15by Berenbrock, Charles“...U.S. Geological Survey,...”
Published 2008
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16by Fitzpatrick, Faith A.“...U.S. Geological Survey,...”
Published 2008
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17by Brandt, Sara L.“...[U.S. Geological Survey],...”
Published 2009
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18by Hladik, Michelle L.“...U.S. Geological Survey,...”
Published 2009
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