@misc{indiciae7522ad0a12a7,
  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 = {1957},
  doi = {10.3133/pp292},
  url = {https://pubs.usgs.gov/publication/pp292},
  note = {Source identifier: pp292}
}