@misc{indiciaed4972a1fb826,
  title = {The quality of the surface waters of California},
  author = {Walton Van Winkle and Frederick M. Eaton},
  year = {1910},
  doi = {10.3133/wsp237},
  url = {https://pubs.usgs.gov/publication/wsp237},
  note = {Source identifier: wsp237}
}