@misc{indiciae1b3f4c4bdf81,
  title = {Geology of the southern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana},
  author = {M. R. Klepper and R. A. Weeks and E. T. Ruppel},
  year = {1952},
  doi = {10.3133/ofr5287},
  url = {https://pubs.usgs.gov/publication/ofr5287},
  note = {Source identifier: ofr5287}
}