TY  - RPRT
TI  - A regional monitoring network to investigate the occurrence of agricultural chemicals in near-surface aquifers of the midcontinental USA
AU  - D.W. Kolpin
AU  - D. A. Goolsby
PY  - 1995
UR  - https://pubs.usgs.gov/publication/70169088
ID  - 70169088
ER  -