@misc{indiciae54aac95442e6,
  title = {Geologic studies of Yellowstone National Park imagery using an electronic image enhancement system},
  author = {Harry Wynn Smedes},
  year = {1970},
  doi = {10.3133/ofr70306},
  url = {https://pubs.usgs.gov/publication/ofr70306},
  note = {Source identifier: ofr70306}
}