@misc{indiciae60dafdf74e5d,
  title = {Petroleum potential of wilderness lands in Arizona},
  author = {Robert T. Ryder},
  year = {1983},
  doi = {10.3133/cir902c},
  url = {https://pubs.usgs.gov/publication/cir902C},
  note = {Source identifier: cir902C}
}