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1Published 1983“...U.S. Geological Survey,...”
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2Published 1983“...U.S. Geological Survey,...”
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3by Wheeler, Judith C.“...U.S. Geological Survey ;...”
Published 1990
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4by Nemoff, Peggy R.“...U.S. Geological Survey ;...”
Published 1989
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5by Oliveros, James P.“...U.S. Geological Survey ;...”
Published 1989
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7Published 1991“...U.S. Geological Survey ;...”
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8by Robbins, Eleanora I. (Eleanora Iberall), 1942-“...U.S. Geological Survey ;...”
Published 1991
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9by Otton, James K.“...U.S. Geological Survey :...”
Published 1992
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10by Tenbus, Frederick J.“...U.S. Geological Survey ;...”
Published 1990
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11Published 1991“...U.S. Geological Survey ;...”
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15by Tenbus, Frederick J.“...U.S. Geological Survey ;...”
Published 1999
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16by Gibson, Thomas G.“...U.S. Geological Survey,...”
Published 1994
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18by Hancock, Tracy Connell“...U.S. Geological Survey,...”
Published 2006
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19by Ries, Kernell G., III, 1955-“...U.S. Geological Survey,...”
Published 2006
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