TY - RPRT TI - Isotopic discrimination of natural and anthropogenic perchlorate sources in groundwater in a semi-arid region of northeastern Oregon (USA) AU - Paul B. Hatzinger AU - J.K. Bohlke AU - W.A. Jackson AU - Baohua Gu AU - Stanley J. Mroczkowski AU - Neil C. Sturchio PY - 2022 DO - 10.1016/j.apgeochem.2022.105232 UR - https://pubs.usgs.gov/publication/70230854 ID - 70230854 ER -