@misc{indiciae4fad8c184ad4,
  title = {Changing perceptions of United States natural-gas resources as shown by successive U. S. Department of the Interior assessments},
  author = {James W. Schmoker and Thaddeus S. Dyman},
  year = {2001},
  doi = {10.3133/b2172b},
  url = {https://pubs.usgs.gov/publication/b2172B},
  note = {Source identifier: b2172B}
}