TY - RPRT TI - Combined radiogenic (87Sr/86Sr, 234U/238U) and stable (δ88Sr) isotope systematics as tracers of anthropogenic groundwater contamination within the Williston Basin USA AU - Leonid A. Neymark AU - Wayne R. Premo AU - Poul Emsbo PY - 2018 DO - 10.1016/j.apgeochem.2018.06.006 UR - https://pubs.usgs.gov/publication/70283422 ID - 70283422 ER -