Commonwealth of Pennsylvania 1994 Water Quality Assessment Published: 1994 Total Pages: 210 Get eBook
Water-quality Assessment of the Lower Susquehanna River Basin, Pennsylvania and Maryland Robert A. Hainly Published: 1997 Total Pages: 164 Get eBook
A Snapshot Evaluation of Stream Environmental Quality in the Little Conestoga Creek Basin, Lancaster County, Pennsylvania Connie A. Loper Published: 1998 Total Pages: 8 Get eBook
Effects of Coal-mine Drainage on Stream Water Quality in the Allegheny and Monongahela River Basin James I. Sams Published: 2000 Total Pages: 28 Get eBook
Effects of Coal-mine Discharges on the Quality of the Stonycreek River and Its Tributaries, Somerset and Cambria Counties, Pennsylvania Donald R. Williams Published: 1996 Total Pages: 102 Get eBook
