Title: The Mines and Minerals of Berks County, Pennsylvania, Author: Ronald A Sloto
Title: Arsenic, Boron, and Fluoride Concentrations in Ground Water in and Near Diabase Intrusions, Newark Basin, Southeastern Pennsylvania, Author: Lisa A. Senior
Title: Total Nitrogen and Suspended-Sediment Loads and Identification of Suspended- Sediment Sources in the Laurel Hill Creek Watershed, Somerset County, Pennsylvania, Water Years 2010?11, Author: Allen C Gellis