@misc{indiciae73b25eb48089,
  title = {Photogeologic and reconnaissance geologic map of the Jack Creek NW Quadrangle, Custer County, Montana},
  author = {S. J. Luft},
  year = {1988},
  doi = {10.3133/mf2020},
  url = {https://pubs.usgs.gov/publication/mf2020},
  note = {Source identifier: mf2020}
}