@misc{indiciaeaed138ace63f,
  title = {Geologic map of the Challis 1 degree x 2 degree Quadrangle, Idaho},
  author = {Frederick S. Fisher and D. H. McIntyre and Kathleen M. Johnson},
  year = {1983},
  doi = {10.3133/ofr83523},
  url = {https://pubs.usgs.gov/publication/ofr83523},
  note = {Source identifier: ofr83523}
}