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7by Bevans, Hugh E.“...U.S. Geological Survey,...”
Published 1989
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8by Aucott, Walter R.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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9by Christensen, Victoria G.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1997
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10by Aucott, Walter R.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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11by Christensen, Victoria G.“...[U.S. Dept. of the Interior, U.S. Geological Survey],...”
Published 1998
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12by Pope, Larry M.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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13by Ziegler, Andrew C.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1999
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14by Mau, David P. (David Phillip)“...[U.S. Dept. of the Interior, U.S. Geological Survey],...”
Published 1999
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15by Pope, Larry M.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2000
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16by Mau, David P. (David Phillip)“...[U.S. Dept. of the Interior, U.S. Geological Survey],...”
Published 2000
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17by Milligan, Chad R.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2000
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18by Hansen, Cristi V.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2001
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19by Pope, Larry M.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2002
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20by Hansen, Cristi V.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2004
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