@misc{indiciae0e42259508cb,
  title = {Hydrology of Area 33, eastern region, Interior Coal Province, Indiana and Kentucky},
  author = {David J. Wangsness},
  year = {1981},
  doi = {10.3133/ofr81423},
  url = {https://pubs.usgs.gov/publication/ofr81423},
  note = {Source identifier: ofr81423}
}