Author: Trexler, J. Peter, 1926- / Year: 1968 - Yale University Library GeoBlacklight Search Results

1. Geologic map of the Klingerstown quadrangle, Northumberland, Schuylkill, and Dauphin counties, Pennsylvania [cartographic material]

1968. 2012-01-24T20:38:26Z. 2012-03-05T17:35:59Z. Trexler, J. Peter, 1926-. U.S. Geological Survey. English. Public. Pennsylvania, Northumberland County, Schuylkill County, and Dauphin County.

2. Geologic map of the Lykens quadrangle, Dauphin, Schuykill, and Lebanon Counties, Pennsylvania [cartographic material]

1968. 2012-01-24T20:40:33Z. 2012-03-05T17:35:59Z. Trexler, J. Peter, 1926-. U.S.Geological Survey. English. Public. Pennsylvania, Dauphin County, Schuylkill County, and Lebanon County.

3. Geologic map of the Valley View quadrangle, Schuykill and Northumberland Counties, Pennsylvania [cartographic material]

1968. 2012-01-24T20:35:55Z. 2012-03-05T17:35:59Z. Trexler, J. Peter, 1926-. Geological Survey. English. Public. Pennsylvania, Schuylkill County, and Northumberland County.