TY - RPRT TI - Finding minimal herbicide concentrations in ground water? Try looking for their degradates AU - D.W. Kolpin AU - E.M. Thurman AU - S. M. Linhart PY - 2000 DO - 10.1016/s0048-9697(99)00535-5 UR - https://pubs.usgs.gov/publication/70022787 ID - 70022787 ER -