Author: Roen, John B. / Spatial Coverage: Washington County - Yale University Library GeoBlacklight Search Results

Start Over Author Roen, John B. Spatial Coverage Washington County

1. Geologic map of the Midway quadrangle, Washington County, Southwestern Pennsylvania [cartographic material]

1973. 2012-04-03T14:27:30Z. 2012-05-03T15:36:10Z. Roen, John B. Geological Survey. English. Public. Pennsylvania and Washington County.

2. 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.

3. Geologic map of the Waynesburg quadrangle, Southwestern Pennsylvania

1970. 2012-02-29T15:33:42Z. 2012-02-29T15:33:42Z. Roen, John B. The Survey. English. Public. Pennsylvania, Greene County, and Washington County.

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