@misc{indiciae39906d4378c4,
  title = {Quality of water of the Colorado River in 1926-1928},
  author = {C. S. Howard},
  year = {1930},
  doi = {10.3133/wsp636a},
  url = {https://pubs.usgs.gov/publication/wsp636A},
  note = {Source identifier: wsp636A}
}