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1by Hammond, Stephen E.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1998
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2Published 1997“...Fact sheet (Geological Survey (U.S.)) ;...”
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3by Hess, Glen W. (Glen William), 1960-“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1997
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4by Kilroy, Kathryn C.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1997
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5Published 1997“...Fact sheet (Geological Survey (U.S.)) ;...”
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6Published 1998“...Fact sheet (Geological Survey (U.S.)) ;...”
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7by Thomas, Karen A.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1997
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8by Thomas, Karen A.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1997
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10Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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11Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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12by Zapler, Mike“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2000
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13Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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14Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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15Published 2001“...Fact sheet (Geological Survey (U.S.)) ;...”
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16by Maurer, Douglas K.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2002
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17Published 2003“...Fact sheet (Geological Survey (U.S.)) ;...”
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18by Andraski, Brian J. (Brian Joseph)“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1995
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19Published 2005“...Fact sheet (Geological Survey (U.S.)) ;...”
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20by Bauer, Eva M.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2007
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