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1by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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2by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
Government Document Book -
3by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1997
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4by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1998
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5Published 2002“...Fact sheet (Geological Survey (U.S.)) ;...”
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6by McGee, Benton D.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2006
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7by Knowles, Scott M.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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8by Bidlake, W. R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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10Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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11by Fusté, Luis A.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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12by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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13by Mason, Robert R.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2001
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