@misc{indiciae3c5bca2b75a2,
  title = {Geologic map of the east flank of the Elkhorn Mountains, Broadwater County, Montana},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1968},
  doi = {10.3133/ofr68303},
  url = {https://pubs.usgs.gov/publication/ofr68303},
  note = {Source identifier: ofr68303}
}