TY  - RPRT
TI  - Reconnaissance data for selected herbicides, two atrazine metabolities, and nitrate in surface water of the Midwestern United States, 1989-90
AU  - E.A. Scribner
AU  - E.M. Thurman
AU  - D. A. Goolsby
AU  - M. T. Meyer
AU  - M. S. Mills
AU  - M.L. Pomes
PY  - 1993
DO  - 10.3133/ofr93457
UR  - https://pubs.usgs.gov/publication/ofr93457
ID  - ofr93457
ER  -