@misc{indiciaeaddf5bc9a138,
  title = {Map showing evaluation of oil and gas potential of the Shoshone National Forest, Wyoming},
  author = {Charles Winthrop Spencer and John S. Dersch},
  year = {1981},
  doi = {10.3133/ofr81667},
  url = {https://pubs.usgs.gov/publication/ofr81667},
  note = {Source identifier: ofr81667}
}