TY - RPRT TI - Four-dimensional isotopic approach to identify perchlorate sources in groundwater: Application to the Rialto-Colton and Chino subbasins, southern California (USA) AU - Paul B. Hatzinger AU - J.K. Bohlke AU - Neil C. Sturchio AU - John A. Izbicki AU - Nicholas F. Teague PY - 2018 DO - 10.1016/j.apgeochem.2018.08.020 UR - https://pubs.usgs.gov/publication/70199456 ID - 70199456 ER -