TY - RPRT TI - Occurrence and distribution of nitrate and selected pesticides in ground water in Missouri, 1986-94 AU - D.H. Wilkison AU - R.D. Maley PY - 1996 DO - 10.3133/wri964183 UR - https://pubs.usgs.gov/publication/wri964183 ID - wri964183 ER -