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1
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2by Elder, John F.“...U.S. Geological Survey,...”
Published 1996
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3
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4by Hall, David W.“...U.S. Geological Survey,...”
Published 2006
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5
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6by Pendleton, Elizabeth A.“...U.S. Geological Survey,...”
Published 2007
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7by Falcone, James S., 1946-“...U.S. Geological Survey,...”
Published 2006
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8by Fitzpatrick, Faith A.“...U.S. Geological Survey,...”
Published 2008
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9
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10by Robertson, Dale M.“...U.S. Geological Survey,...”
Published 2008
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11by Juckem, Paul F.“...U.S. Geological Survey,...”
Published 2009
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12by Selbig, W. R.“...U.S. Geological Survey,...”
Published 2009
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13by Robertson, Dale M.“...U.S. Geological Survey,...”
Published 2009
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14by Robertson, Dale M.“...U.S. Geological Survey,...”
Published 2009
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15by Shaffer, Kimberly“...U.S. Geological Survey,...”
Published 2009
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16
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17by Grant, R. S.“...U.S. Geological Survey,...”
Published 1978
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18by Novitzki, R. P.“...U.S. Geological Survey,...”
Published 1978
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19
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20by Holmstrom, B. K.“...U.S. Geological Survey,...”
Published 1979
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Government Document eBook