Evaluation of Agricultural Best-management Practices in the Conestoga River Headwaters, Pennsylvania: A Summary Report, 1982-90

Occurrence of Nitrate and Herbicides in Ground Water in the Upper Conestoga River Basin, Pennsylvania: Volume 85, Issue 4202

Evaluation of Agricultural Best-management Practices in the Conestoga River Headwaters, Pennsylvania: Effects of Nutrient Management on Quality of Surface Runoff at a Small Carbonate-rock Site Near Ephrata, Pennsylvania, 1984-90

Evaluation of Agricultural Best-management Practices in the Conestoga River Headwaters, Pennsylvania: Effects of Nutrient Management on Quality of Surface Runoff at a Small Carbonate-rock Site Near Ephrata, Pennsylvania, 1984-90

Occurrence of Nitrate and Herbicides in Ground Water in the Upper Conestoga River Basin, Pennsylvania

Evaluation of Agricultural Best-management Practices in the Conestoga River Headwaters, Pennsylvania: Effects of Pipe-outlet Terracing on Quantity and Quality of Surface Runoff and Ground Water in a Small Carbonate-rock Basin Near Churchtown, Pennsylvania, 1983-89

Effects of Specific Land Uses on Nonpoint Sources of Suspended Sediment, Nutrients, and Herbicides, Pequea Creek Basin, Pennsylvania 1979-80

Evaluation of Agricultural Best-management Practices in the Conestoga River Headwaters, Pennsylvania: Effects of Pipe-outlet Terracing on Quantity and Quality of Surface Runoff and Ground Water in a Small Carbonate-rock Basin Near Churchtown, Pennsylvania, 1983-89

Synthesis of Nutrient and Sediment Data for Watersheds Within the Chesapeake Bay Drainage Basin