@misc{indiciae1a68cea70dd6,
  title = {Quality of water in Colorado River in 1925-1926},
  author = {W. D. Collins and Charles S. Howard},
  year = {1928},
  doi = {10.3133/wsp596b},
  url = {https://pubs.usgs.gov/publication/wsp596B},
  note = {Source identifier: wsp596B}
}