@misc{indiciae298dd3c2b76e,
  title = {U.S. Geological Survey ground-water studies in Illinois},
  author = {Charles F. Avery},
  year = {1994},
  doi = {10.3133/ofr93141},
  url = {https://pubs.usgs.gov/publication/ofr93141},
  note = {Source identifier: ofr93141}
}