TY  - RPRT
TI  - Nitrogen flux and sources in the Mississippi River Basin
AU  - D. A. Goolsby
AU  - W.A. Battaglin
AU  - Brent T. Aulenbach
AU  - R. P. Hooper
PY  - 2000
DO  - 10.1016/s0048-9697(99)00532-x
UR  - https://pubs.usgs.gov/publication/70022911
ID  - 70022911
ER  -