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Autor:Geological Survey (U S. )

Annual Report of the United States Geological Survey to the Secretary of the Interior, Part 3

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de la 270^RON

Bulletin of the United States Geological Survey, Issues 90-96

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de la 270^RON

Bulletin, Issues 202-207

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de la 270^RON

Water-Supply and Irrigation Papers of the United States Geological Survey, Issues 70-74

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de la 263^RON

Water Supply Paper

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de la 270^RON