TY - RPRT TI - Assessment of nonpoint-source contamination of the High Plains Aquifer in south-central Kansas, 1987 AU - John O. Helgesen AU - Lloyd E. Stullken AU - A. T. Rutledge PY - 1994 DO - 10.3133/wsp2381c UR - https://pubs.usgs.gov/publication/wsp2381C ID - wsp2381C ER -