Author: Rothrock, Howard Eugene, 1893- / Spatial Coverage: Northumberland County - Yale University Library GeoBlacklight Search Results

Start Over Author Rothrock, Howard Eugene, 1893- Spatial Coverage Northumberland County

1. Geology of anthracite in the southeastern part of the Mount Carmel quadrangle, Pennsylvania

1953. 2018-06-21T20:08:01Z. 2018-06-21T20:08:01Z. Rothrock, Howard Eugene, 1893-. U.S. Dept. of the Interior, Geological Survey. English. cartographic image. Public. Pennsylvania, Northumberland County, Schuylkill County, Northumberland County., and Schuylkill County.

2. Geology of anthracite in the southwestern part of the Mount Carmel quadrangle, Pennsylvania [cartographic material]

1951. 2018-06-22T19:01:18Z. 2018-09-05T20:08:55Z. Rothrock, Howard Eugene, 1893-. U.S. Dept. of the Interior, Geological Survey. English. cartographic image. Public. Pennsylvania, Northumberland County, and Northumberland County.