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1Published 1996“...Fact sheet (Geological Survey (U.S.)) ;...”
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2Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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3by Demas, Charles R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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4Published 1997“...Fact sheet (Geological Survey (U.S.)) ;...”
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5Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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6Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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7Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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8Published 2001“...Fact sheet (Geological Survey (U.S.)) ;...”
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9Published 2005“...Fact sheet (Geological Survey (U.S.)) ;...”
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10Published 2007“...Fact sheet (Geological Survey (U.S.)) ;...”
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11by Freiwald, D. A.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2008
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12Published 2003“...Fact sheet (Geological Survey (U.S.)) ;...”
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13Published 2005“...Fact sheet (Geological Survey (U.S.)) ;...”
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14by Demcheck, Dennis K.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2003
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15by Demcheck, Dennis K.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2003
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16by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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17by Justus, B. G.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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18Published 2002“...Fact sheet (Geological Survey (U.S.)) ;...”
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19by Prakken, Lawrence B.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2011
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20by Griffith, Jason M.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2011
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