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1by Cartwright, Richard A.“...U.S. Geological Survey,...”
Published 1998
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2by Heisig, Paul M. (Paul Martin), 1961-“...U.S. Geological Survey,...”
Published 1999
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3by Kontis, A. L.“...U.S. Geological Survey,...”
Published 1999
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8by Lawrence, Gregory B.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1999
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9Published 2008“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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10by Mulvihill, Christiane I.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2005
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11by Heisig, Paul M.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2009
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12Published 2012“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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13Published 2012“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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14by Chu, Anthony“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 2013
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15by Nystrom, Elizabeth A.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 2018
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16“...U.S. Department of the Interior, U.S. Geological Survey,...”
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17“...U.S. Department of the Interior, U.S. Geological Survey,...”
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18“...U.S. Department of the Interior, U.S. Geological Survey,...”
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19“...U.S. Department of the Interior, U.S. Geological Survey,...”
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