TY  - RPRT
TI  - Nitrogen in the Mississippi Basin--Estimating sources and predicting flux to the Gulf of Mexico
AU  - Donald A. Goolsby
AU  - William A. Battaglin
PY  - 2000
DO  - 10.3133/fs13500
UR  - https://pubs.usgs.gov/publication/fs13500
ID  - fs13500
ER  -