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  - 1992
DO  - 10.3133/ofr91238
UR  - https://pubs.usgs.gov/publication/ofr91238
ID  - ofr91238
ER  -