@misc{indiciaef7a06641b801,
  title = {Selected presentations on coal-bed gas in the eastern United States},
  author = {Peter D. Warwick},
  year = {2004},
  doi = {10.3133/ofr20041273},
  url = {https://pubs.usgs.gov/publication/ofr20041273},
  note = {Source identifier: ofr20041273}
}