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U.S. Dept. of the Interior, U.S. Geological Survey
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1950
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U.S. G.P.O
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U.S. Dept. of the Interior, U.S. Geological Survey
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Series
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U.S. Geological Survey
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U.S. Department of the Interior, U.S. Geological Survey
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U.S. Department of the Interior, U.S. Geological Survey
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2019.
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U.S. Department of the Interior, U.S. Geological Survey
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2020.
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