Water Quality of Large Discharges from Mines in the Anthracite Region of Eastern Pennsylvania

Water Quality of Large Discharges from Mines in the Anthracite Region of Eastern Pennsylvania

Summary Groundwater Resources of Centre County, Pennsylvania

Relation of Ground-water Quality to Land Use in the Philadelphia, Pennsylvania-- Camden, New Jersey Area: Issues 88-4211

Water resources of Oley Township, Berks County, Pennsylvania: Volume 87, Issue 4065

Relation of Ground-water Quality to Land Use in the Philadelphia, Pennsylvania-- Camden, New Jersey Area