@misc{indiciaeb5b3545f2323,
  title = {Photogeologic map of the Mt. Pennell-11 quadrangle, Garfield County, Utah},
  author = {J.S. Detterman},
  year = {1955},
  doi = {10.3133/i47},
  url = {https://pubs.usgs.gov/publication/i47},
  note = {Source identifier: i47}
}