@misc{indiciaea52a7355d242,
  title = {Coal resources of Tazewell County, Virginia, 1980},
  author = {Kenneth John Englund and Roger E. Thomas},
  year = {1991},
  doi = {10.3133/b1913},
  url = {https://pubs.usgs.gov/publication/b1913},
  note = {Source identifier: b1913}
}