@misc{indiciae1f17e89f383b,
  title = {Availability of low-sulphur coal in Mercer County, West Virginia},
  author = {Kenneth John Englund},
  year = {1972},
  doi = {10.3133/ofr72110},
  url = {https://pubs.usgs.gov/publication/ofr72110},
  note = {Source identifier: ofr72110}
}