TY  - RPRT
TI  - Nitrate in ground water: using a model to simulate the probability of nitrate contamination of shallow ground water in the conterminous United States
AU  - Kerie J. Hitt
AU  - Bernard T. Nolan
PY  - 2005
DO  - 10.3133/sim2881
UR  - https://pubs.usgs.gov/publication/sim2881
ID  - sim2881
ER  -