@misc{indiciae2500cbfc777c,
  title = {Effects of produced water at some oilfield production sites in southern Illinois},
  author = {J. K. Otton},
  year = {1997},
  doi = {10.3133/ofr97448},
  url = {https://pubs.usgs.gov/publication/ofr97448},
  note = {Source identifier: ofr97448}
}