Ground-water resources of Montgomery County, Pennsylvania /

von Newport, Thomas Gwyn, 1922-
Harrisburg : [Topographic and Geologic Survey; may be purchased from Bureau of Publications], 1971

Ground-water resources of central and southern York County, Pennsylvania /

von Lloyd, Orville B., Growitz, Douglas J.
Harrisburg : Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Ground-water resources of Lackawanna County, Pennsylvania /

von Hollowell, Jerrald R., Koester, Harry E.
Harrisburg : Pennsylvania Geological Survey, 1975

Hydrology of the metamorphic and igneous rocks of central Chester County, Pennsylvania /

von Poth, Charles W.
Harrisburg : [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey], 1968

Water resources of Lehigh County, Pennsylvania /

Harrisburg, Pa. : [Bureau of Topographic and Geologic Survey], 1972

Summary, ground-water resources of Butler County, Pennsylvania /

von Poth, Charles W.
Harrisburg : Pennsylvania Geological Survey, 1973

Ground-water resources of the Loysville and Mifflintown quadrangles in south-central Pennsylvania /

von Johnston, Herbert E.
[Harrisburg] : [Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey], 1970

Hydrology of the Martinsburg Formation in Lehigh and Northampton Counties, Pennsylvania /

von Poth, Charles W.
Harrisburg : [Bureau of Topographic and Geologic Survey], 1972

Summary ground-water resources of Clarion County, Pennsylvania /

von Newport, Thomas Gwyn, 1922-
Harrisburg : [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey], 1973

Hydrology of the Pleistocene sediments in the Wyoming Valley, Luzerne County, Pennsylvania /

von Hollowell, Jerrald R.
Harrisburg : [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey], 1971

Summary, ground-water resources of Allegheny County, Pennsylvania /

von Gallaher, John T., 1921-
Harrisburg : Pennsylvania Geological Survey, 1973

Summary ground-water resources of Beaver County, Pennsylvania /

von Poth, Charles W.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1973

Summary ground-water resources of Washington County, Pennsylvania /

von Newport, Thomas Gwyn, 1922-
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1973

Summary, ground-water resources of Westmoreland County, Pennsylvania /

von Newport, Thomas Gwyn, 1922-
Harrisburg : Pennsylvania Geological Survey, 1973