@misc{indiciaea1b0fb56c05e,
  title = {Geology of the north end of the Ruby Range, southwestern Montana},
  author = {Russell G. Tysdal},
  year = {1970},
  doi = {10.3133/ofr70333},
  url = {https://pubs.usgs.gov/publication/ofr70333},
  note = {Source identifier: ofr70333}
}