@misc{indiciae23cef2232328,
  title = {Geologic and structure maps of the Monarch Quadrangle, Sheridan County, Wyoming, and Big Horn County, Montana},
  author = {B. E. Barnum},
  year = {1983},
  doi = {10.3133/mf1517},
  url = {https://pubs.usgs.gov/publication/mf1517},
  note = {Source identifier: mf1517}
}