TY - RPRT TI - Herbicides in surface waters of the midwestern United States: The effect of spring flush AU - E.M. Thurman AU - D. A. Goolsby AU - M. T. Meyer AU - D.W. Kolpin PY - 2002 DO - 10.1021/es00022a018 UR - https://pubs.usgs.gov/publication/70015033 ID - 70015033 ER -