@misc{indiciae574d10b6da2f,
  title = {An assessment of coal resources available for development: Central Appalachian Region - First year summary},
  author = {M.D. Carter and N.K. Gardner},
  year = {1989},
  doi = {10.3133/ofr89362},
  url = {https://pubs.usgs.gov/publication/ofr89362},
  note = {Source identifier: ofr89362}
}