TY  - RPRT
TI  - Herbicides in ground water of the Midwest: A regional study of shallow aquifers, 1991-94
AU  - Dana W. Kolpin
AU  - J. K. Stamer
AU  - D. A. Goolsby
AU  - E.M. Thurman
PY  - 1998
DO  - 10.3133/fs07698
UR  - https://pubs.usgs.gov/publication/fs07698
ID  - fs07698
ER  -