@misc{indiciae7f5cb670ecf9,
  title = {Coalbed methane potential in the Appalachian states of Pennsylvania, West Virginia, Maryland, Ohio, Virginia, Kentucky, and Tennessee; an overview},
  author = {Paul C. Lyons},
  year = {1996},
  doi = {10.3133/ofr96735},
  url = {https://pubs.usgs.gov/publication/ofr96735},
  note = {Source identifier: ofr96735}
}