TY - RPRT TI - Relative risk of groundwater-quality degradation near California (USA) oil fields estimated from 3H, 14C, and 4He AU - Peter B. McMahon AU - Matthew K. Landon AU - Tracy Davis AU - Michael T. Wright AU - Celia Z. Rosecrans AU - Robert Anders AU - Michael Land AU - Justin T. Kulongoski AU - Andrew G. Hunt PY - 2021 DO - 10.1016/j.apgeochem.2021.105024 UR - https://pubs.usgs.gov/publication/70221475 ID - 70221475 ER -