@misc{indiciaed41be6c70205,
  title = {Photogeologic and reconnaissance geologic map of the Beebe SW Quadrangle, Custer County, Montana},
  author = {S. J. Luft},
  year = {1987},
  doi = {10.3133/mf1966},
  url = {https://pubs.usgs.gov/publication/mf1966},
  note = {Source identifier: mf1966}
}