@misc{indiciae822a38cabe19,
  title = {Assessment of undiscovered carboniferous coal-bed gas resources of the Appalachian Basin and Black Warrior Basin provinces, 2002},
  author = {Robert C. Milici and Joseph R. Hatch},
  year = {2004},
  doi = {10.3133/fs20043092},
  url = {https://pubs.usgs.gov/publication/fs20043092},
  note = {Source identifier: fs20043092}
}