@misc{indiciaee8aaed2b73e1,
  title = {Critical review of the San Juan peneplain, southwestern Colorado},
  author = {T. A. Steven},
  year = {1968},
  doi = {10.3133/pp594i},
  url = {https://pubs.usgs.gov/publication/pp594I},
  note = {Source identifier: pp594I}
}