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166Published 1981“...U.S. Geological Survey,...”
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173by Moll, E. J. (Elizabeth Jean), 1954-“...[U.S. Geological Survey],...”
Published 1981
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174by Schlee, John S., 1928-2019“...U.S. Geological Survey,...”
Published 1980
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177
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178by Hoover, Donald B., 1930-“...[U.S. Geological Survey],...”
Published 1981
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