Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81 : a water-quality study of the Tidal Potomac River and Estuary /
Shultz, David J.
Washington, D.C. : U.S. Dept. of the Interior, Geological Survey,
1990.
Blue Plains Sewage Treatment Plant (Washington, D.C.)
Nitrates
Sediment transport