Books by Clifford H. Dodge
Bedrock geologic map, coal-res
Bedrock geologic map, coal-resource maps, and digital datasets of the Brandy Camp quadrangle, Elk, Jefferson, and Clearfield counties, Pennsylvania
Coal resources of Allegheny Co
Coal resources of Allegheny County, Pennsylvania / compiled by Clifford H. Dodge.
Coal resources of Butler Count
Coal resources of Butler County, Pennsylvania
Coal resources of Greene Count
Coal resources of Greene County, Pennsylvania
Coal resources of Greene Count
Coal resources of Greene County, Pennsylvania / compiled by Clifford H. Dodge and Albert D. Glover.