@misc{indiciaec09dcabeca1d,
  title = {The quality of surface waters in Minnesota},
  author = {Richard B. Dole and F.F. Wesbrook},
  year = {1907},
  doi = {10.3133/wsp193},
  url = {https://pubs.usgs.gov/publication/wsp193},
  note = {Source identifier: wsp193}
}