TY  - RPRT
TI  - Importance of the Mississippi River Basin for investigating agricultural–chemical contamination of the hydrologic cycle
AU  - Dana W. Kolpin
PY  - 2000
DO  - 10.1016/s0048-9697(99)00530-6
UR  - https://pubs.usgs.gov/publication/70168344
ID  - 70168344
ER  -