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

Start Over Publisher U.S. Geological Survey Spatial Coverage Pennsylvania.

1. State of Pennsylvania [cartographic material]

1956. 2018-05-24T18:27:24Z. 2018-09-05T19:41:59Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Pennsylvania and Pennsylvania.

2. The stratigraphic relationship of the Berea, Corry, and Cussewago sandstones in northeastern Ohio and northwestern Pennsylvania

1946. 2018-01-23T14:42:00Z. 2018-01-23T14:42:00Z. De Witt, Wallace, Jr., 1920-2012. U.S. Geological Survey. English. cartographic image. Public. Pennsylvania, Ohio, Ohio., and Pennsylvania. Mississippian and From 310 to 345 million years ago.