Publisher: U.S. Geological Survey / Spatial Coverage: Alleghany County - Yale University Library GeoBlacklight Search Results

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1. Geologic map of the Monongahela quadrangle, southwestern Pennsylvania [cartographic material]

1968. 2012-02-16T21:00:50Z. 2012-03-05T17:41:25Z. Roen, John B. U.S. Geological Survey. English. Public. Pennsylvania, Washington County, Alleghany County, and Westmoreland County.

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1. Geologic map of the Monongahela quadrangle, southwestern Pennsylvania [cartographic material]

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