Publisher: U.S. Geological Survy / Year: 1955 - Yale University Library GeoBlacklight Search Results

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1. Geologic map of the Fort Wilkins quadrangle, Michigan bedrock geology. [cartographic material]

1955. 2011-04-11T17:36:25Z. 2012-02-13T19:41:27Z. Cornwall, Henry Rowland, 1913-. U.S. Geological Survy. English. Public. Michigan and Keweenaw County.

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1. Geologic map of the Fort Wilkins quadrangle, Michigan bedrock geology. [cartographic material]

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