@misc{indiciae0b85f81c9d78,
  title = {Paleozoic and Mesozoic stratigraphy of the northern part of the Ruby Range, southwestern Montana},
  author = {Russell G. Tysdal},
  year = {1976},
  doi = {10.3133/b1405i},
  url = {https://pubs.usgs.gov/publication/b1405I},
  note = {Source identifier: b1405I}
}