@misc{indiciae456eeadb79a0,
  title = {The rationale for assessment of undiscovered, economically recoverable oil and gas in central and northern Arizona: Play analyses of seven favorable areas},
  author = {W. C. Butler},
  year = {1988},
  doi = {10.3133/ofr87450v},
  url = {https://pubs.usgs.gov/publication/ofr87450V},
  note = {Source identifier: ofr87450V}
}