@misc{indiciae90a3a5e76491,
  title = {Quality of surface waters of the United States, 1968, Parts 9 and 10, Colorado River basin and the Great Basin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/wsp2098},
  url = {https://pubs.usgs.gov/publication/wsp2098},
  note = {Source identifier: wsp2098}
}