@misc{indiciae64c7a14622d8,
  title = {Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin– Results of investigations through April 1992},
  author = {Arthur R. Schmidt and Stephen F. Blanchard},
  year = {1997},
  doi = {10.3133/wri964223},
  url = {https://pubs.usgs.gov/publication/wri964223},
  note = {Source identifier: wri964223}
}