@misc{indiciae83ae30843876,
  title = {Hydrology of area 27, Eastern Region, Interior Coal Province, Illinois},
  author = {E.E. Zuehls},
  year = {1987},
  doi = {10.3133/ofr84707},
  url = {https://pubs.usgs.gov/publication/ofr84707},
  note = {Source identifier: ofr84707}
}