TY - RPRT TI - Exploring factors controlling the variability of pesticide concentrations in the Willamette River Basin using tree-based models AU - S.S. Qian AU - Chauncey W. Anderson PY - 1999 DO - 10.1021/es9812148 UR - https://pubs.usgs.gov/publication/70021393 ID - 70021393 ER -