@misc{indiciae1f21b8c2cc61,
  title = {Surface-water-quality assessment of the upper Illinois River basin in Illinois, Indiana, and Wisconsin; project description},
  author = {D. M. Mades},
  year = {1987},
  doi = {10.3133/ofr87473},
  url = {https://pubs.usgs.gov/publication/ofr87473},
  note = {Source identifier: ofr87473}
}