TY  - RPRT
TI  - Relating nitrogen sources and aquifer susceptibility to nitrate in shallow ground waters of the United States
AU  - B. T. Nolan
PY  - 2005
DO  - 10.1111/j.1745-6584.2001.tb02311.x
UR  - https://pubs.usgs.gov/publication/70023970
ID  - 70023970
ER  -