TY  - RPRT
TI  - Nitrate in groundwater of the United States, 1991-2003
AU  - Karen R. Burow
AU  - Bernard T. Nolan
AU  - Michael G. Rupert
AU  - Neil M. Dubrovsky
PY  - 2010
DO  - 10.1021/es100546y
UR  - https://pubs.usgs.gov/publication/70007513
ID  - 70007513
ER  -