@misc{indiciaeb2e9e3c259a9,
  title = {Map showing the status of the Oregon wilderness and roadless areas resource potential evaluation},
  author = {Robin B. Fiebelkorn and George W. Walker},
  year = {1983},
  doi = {10.3133/ofr83100},
  url = {https://pubs.usgs.gov/publication/ofr83100},
  note = {Source identifier: ofr83100}
}