@misc{indiciae02bbc55a338e,
  title = {Geology of the Du Noir area, Fremont County, Wyoming},
  author = {William Richard Keefer},
  year = {1955},
  doi = {10.3133/ofr5581},
  url = {https://pubs.usgs.gov/publication/ofr5581},
  note = {Source identifier: ofr5581}
}