@misc{indiciaee269b49017c7,
  title = {Recent estimates of U.S. oil and gas resource potential},
  author = {Charles D. Masters},
  year = {1979},
  doi = {10.3133/ofr79236},
  url = {https://pubs.usgs.gov/publication/ofr79236},
  note = {Source identifier: ofr79236}
}