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Bulletin of the United States Geological Survey, Volume 36
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Bulletin of the United States Geological Survey, Issues 87-89
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Bulletin of the United States Geological Survey, Issues 180-182
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Bulletin - United States Geological Survey, Volume 696
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Bulletin - United States Geological Survey, Volumes 731-734
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Bulletin - United States Geological Survey, Volumes 83-85
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Bulletin - United States Geological Survey, Volumes 670-676
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Bulletin - United States Geological Survey, Volumes 641-642
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Monographs of the United States Geological Survey Volume V.51 PT.1 (1912)

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