@misc{indiciaea8579c595cbf,
  title = {Natural gas production in the United States},
  author = {Christopher J. Schenk and Richard M. Pollastro},
  year = {2002},
  doi = {10.3133/fs11301},
  url = {https://pubs.usgs.gov/publication/fs11301},
  note = {Source identifier: fs11301}
}