@misc{indiciaec93f100e551d,
  title = {Hydrology of area 4, Eastern Coal Province, Pennsylvania, Ohio, and West Virginia},
  author = {Donald K. Roth and Morris J. Engelke and and others},
  year = {1981},
  doi = {10.3133/ofr81343},
  url = {https://pubs.usgs.gov/publication/ofr81343},
  note = {Source identifier: ofr81343}
}