TY - RPRT TI - Preliminary results from exploratory sampling of wells for the California oil, gas, and groundwater program, 2014–15 AU - Peter B. McMahon AU - Justin T. Kulongoski AU - Michael T. Wright AU - Michael T. Land AU - Matthew K. Landon AU - Isabelle M. Cozzarelli AU - Avner Vengosh AU - George R. Aiken PY - 2016 DO - 10.3133/ofr20161100 UR - https://pubs.usgs.gov/publication/ofr20161100 ID - ofr20161100 ER -