TY - RPRT TI - Geochemical data for produced waters from conventional and unconventional oil and gas wells: Results from Colorado, USA AU - Yousif Kharaka AU - Kathleen Gans AU - James Thordsen AU - Madalyn S. Blondes AU - Mark A Engle PY - 2019 DO - 10.1051/e3sconf/20199803002 UR - https://pubs.usgs.gov/publication/70215488 ID - 70215488 ER -