@misc{indiciae86a9667f64c1,
  title = {Quality of water of the Colorado River in 1928-1930},
  author = {C. S. Howard},
  year = {1932},
  doi = {10.3133/wsp638d},
  url = {https://pubs.usgs.gov/publication/wsp638D},
  note = {Source identifier: wsp638D}
}