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4by Abbott, P. O.“...U.S. Geological Survey,...”
Published 1985
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5by Britton, Linda J.“...U.S. Geological Survey,...”
Published 1983
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6by Banta, Edward R.“...U.S. Geological Survey,...”
Published 1985
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7by Ruddy, Barbara C.“...U.S. Geological Survey,...”
Published 1984
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8by Crouch, Thomas M.“...U.S. Geological Survey,...”
Published 1984
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9by Ellis, Sherman R.“...U.S. Geological Survey,...”
Published 1984
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11by Mueller, David K.“...U.S. Geological Survey,...”
Published 1991
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12by Burns, Alan W.“...U.S. Geological Survey,...”
Published 1989
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13by Glover, Kent C.“...U.S. Geological Survey,...”
Published 1996
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14by Litke, David W.“...U.S. Geological Survey,...”
Published 1996
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15by Walton-Day, Katherine“...U.S. Geological Survey,...”
Published 2000
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16Published 1991“...U.S. Department of the Interior, U.S. Geological Survey,...”
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17by O'Sullivan, Robert Brett, 1923-“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1992
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18by Franczyk, Karen J.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1992
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19by Dubiel, Russell F.“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1992
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20“...U.S. Department of the Interior, U.S. Geological Survey,...”
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