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1Published 1988“...The Survey ;...”
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2Published 1988“...The Survey ;...”
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3Published 1988“...The Survey ;...”
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4Published 1988“...The Survey ;...”
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5Published 1988“...The Survey ;...”
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6Published 1988“...The Survey ;...”
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7Published 1988“...The Survey ;...”
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8Published 1988“...The Survey ;...”
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9Published 1988“...The Survey ;...”
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10Published 1988“...The Survey ;...”
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11by Melis, Theodore S.“...U.S. Geological Survey,...”
Published 1995
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12by Webb, Robert H.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1989
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13by Kieffer, Susan W.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1987
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15by Carpenter, Michael C.“...U.S. Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Open-File Section,...”
Published 1995
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16Published 1995“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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17Published 1995“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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18by Wiele, Stephen Mark“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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