@misc{indiciae580fe6d19451,
  title = {Geologic map of Cretaceous Strata between Birch Creek and Brownes Creek, eastern flank of Pioneer Mountains, Beaverhead County, Montana},
  author = {R. G. Tysdal and S.E. Lewis and T. S. Dyman},
  year = {1994},
  doi = {10.3133/i2434},
  url = {https://pubs.usgs.gov/publication/i2434},
  note = {Source identifier: i2434}
}