TY  - RPRT
TI  - Vulnerability of recently recharged groundwater in principal aquifers of the United States to nitrate contamination
AU  - Jason J. Gurdak
AU  - Sharon L. Qi
PY  - 2012
DO  - 10.1021/es300688b
UR  - https://pubs.usgs.gov/publication/70038287
ID  - 70038287
ER  -