@misc{indiciae5e563e2687ad,
  title = {Hydrology of Area 7, Eastern Coal Province, Ohio},
  author = {Morris J. Engelke and D.K. Roth and and others},
  year = {1981},
  doi = {10.3133/ofr81815},
  url = {https://pubs.usgs.gov/publication/ofr81815},
  note = {Source identifier: ofr81815}
}