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1by Nelson, Philip H.“...U.S. Geological Survey :...”
Published 1993
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2by Hale, Glenn S.“...U.S. Geological Survey ;...”
Published 1995
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3
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4Published 1994“...U.S. Geological Survey :...”
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5by Whelan, Joseph F.“...U.S. Geological Survey,...”
Published 1998
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6by O'Brien, Grady M.“...U.S. Geological Survey,...”
Published 1998
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7
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8by Geldon, Arthur L.“...U.S. Geological Survey,...”
Published 1998
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9by Flint, Lorraine E.“...U.S. Geological Survey,...”
Published 1998
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10by Savard, Charles S.“...U.S. Geological Survey,...”
Published 1998
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11by Kwicklis, E. M.“...U.S. Geological Survey,...”
Published 1998
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12
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13by Mower, Timothy E.“...U.S. Geological Survey,...”
Published 1994
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14by Boucher, Michelle S.“...U.S. Geological Survey,...”
Published 1994
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15by Paces, James B.“...U.S. Geological Survey,...”
Published 2001
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16by LeCain, Gary D.“...U.S. Geological Survey,...”
Published 1997
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17by Geldon, Arthur L.“...U.S. Geological Survey,...”
Published 1996
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18by Anna, Lawrence O.“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Published 1998
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19Published 1998“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
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20Published 1994“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Book