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1Published 1978“...The Survey ; U.S. Geological Survey,...”
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11Published 1983“...U.S. Geological Survey ;...”
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13Published 1983“...U.S. Geological Survey,...”
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14by Waddell, K. M. (Kidd M.), 1937-“...U.S. Geological Survey ;...”
Published 1983
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15Published 1984“...U.S. Geological Survey ;...”
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18Published 1984“...U.S. Geological Survey,...”
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19by Levings, Julianne F.“...U.S. Geological Survey ;...”
Published 1985
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