TY - RPRT TI - Pesticides in the nation's rivers, 1975-1980, and implications for future monitoring AU - Robert J. Gilliom AU - Richard B. Alexander AU - Richard A. Smith PY - 1985 DO - 10.3133/wsp2271 UR - https://pubs.usgs.gov/publication/wsp2271 ID - wsp2271 ER -