TY  - RPRT
TI  - Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81
AU  - David J. Shultz
PY  - 1989
DO  - 10.3133/wsp2234j
UR  - https://pubs.usgs.gov/publication/wsp2234J
ID  - wsp2234J
ER  -