Publisher: Pennsylvania Bureau of Topographic and Geologic Survey - Yale University Library GeoBlacklight Search Results

Start Over Publisher Pennsylvania Bureau of Topographic and Geologic Survey

1. Map of the Mercer clay and adjacent units in Clearfield, Centre, and Clinton Counties, Pennsylvania [cartographic material]

1964. 2018-04-17T20:15:13Z. 2018-09-05T19:41:47Z. Pennsylvania. Bureau of Topographic and Geologic Survey. Pennsylvania Bureau of Topographic and Geologic Survey. English. cartographic image. Public. Pennsylvania, Clearfield County, Centre County, Clinton County, Centre County., Clearfield County., and Clinton County.

2. Subsurface structure of the plateau region of north-central and western Pennsylvania on top of the Oriskany formation [cartographic material]

1962. 2018-04-18T19:37:50Z. 2018-09-05T19:43:34Z. Cate, Addison S. Pennsylvania Bureau of Topographic and Geologic Survey. English. cartographic image. Public. Pennsylvania and Pennsylvania.