@misc{indiciae091ac87bbbc8,
  title = {Hydrology of area 6, Eastern Coal Province, Maryland, West Virginia and Pennsylvania},
  author = {W. W. Staubitz and John R. Sobashinski},
  year = {1983},
  doi = {10.3133/ofr8333},
  url = {https://pubs.usgs.gov/publication/ofr8333},
  note = {Source identifier: ofr8333}
}