@misc{indiciae8e77900d0907,
  title = {Petroleum potential of wilderness lands in Wyoming},
  author = {Charles Winthrop Spencer and Richard Blake Powers},
  year = {1983},
  doi = {10.3133/cir902m},
  url = {https://pubs.usgs.gov/publication/cir902M},
  note = {Source identifier: cir902M}
}