Preliminary Report on the Geology and Water Resources of Central Oregon

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Preliminary Report on the Operations of the Coal Testing Plant of the U. S. Geol. Survey at the La. Purchase Exp

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Preliminary Report on the Geology and Water Resources of Central Oregon

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Bulletin

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Professional Paper - United States Geological Survey

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Professional Paper

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U.S. Geological Survey Professional Paper

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Geology and Underground Waters of the Arkansas Valley in Eastern Colorado

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Limestones of Southwestern Pennsylvania

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Bulletin of the United States Geological Survey

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