@misc{indiciaec6f6f13a7a7a,
  title = {Coal reserves of the Pittsburgh (No. 8) bed in Belmont County, Ohio},
  author = {Henry L. Berryhill},
  year = {1955},
  doi = {10.3133/cir363},
  url = {https://pubs.usgs.gov/publication/cir363},
  note = {Source identifier: cir363}
}