Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81

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Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81

by David J. Shultz

(U.S. Geological Survey water-supply paper, 2234-J)

U.S. Dept. of the Interior, Geological Survey, 1990

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