@misc{indiciae2f4ace19a289,
  title = {Maps showing coal resources of the Big A Mountain Quadrangle, Russell and Buchanan counties, Virginia},
  author = {Charles R. Meissner and Stephen E. Heermann},
  year = {1982},
  doi = {10.3133/mf1439},
  url = {https://pubs.usgs.gov/publication/mf1439},
  note = {Source identifier: mf1439}
}