@misc{indiciae32455c6b50ce,
  title = {Coal and petroleum resources in the Appalachian basin: distribution, geologic framework, and geochemical character},
  year = {2014},
  doi = {10.3133/pp1708},
  url = {https://pubs.usgs.gov/publication/pp1708},
  note = {Source identifier: pp1708}
}