@misc{indiciae7d0383ff4cc9,
  title = {Photogeologic and reconnaissance geologic map of the Lignite Creek Quadrangle, Custer County, Montana},
  author = {S. J. Luft and R. B. Colton and G.P. Cormier},
  year = {1984},
  doi = {10.3133/mf1684},
  url = {https://pubs.usgs.gov/publication/mf1684},
  note = {Source identifier: mf1684}
}