@misc{indiciae501847061ce9,
  title = {Preliminary geologic map of the Elk Park quadrangle, Jefferson and Silver Bow Counties, Montana},
  author = {H.W. Smedes and M. R. Klepper and D. M. Pinckney and G.E. Becraft and E. T. Ruppel},
  year = {1962},
  doi = {10.3133/mf246},
  url = {https://pubs.usgs.gov/publication/mf246},
  note = {Source identifier: mf246}
}