@misc{indiciaef0fe9eb004bd,
  title = {Ground-water quality in the Calumet Region of northwestern Indiana and northeastern Illinois, June 1993},
  author = {Richard F. Duwelius and Robert T. Kay and Scott T. Prinos},
  year = {1996},
  doi = {10.3133/wri954244},
  url = {https://pubs.usgs.gov/publication/wri954244},
  note = {Source identifier: wri954244}
}