@misc{indiciae72e893a5a7e8,
  title = {Regional significance of lithologic correlation of Mississippian rocks at Pentagon Mountain and the Sawtooth Range, northwestern Montana},
  author = {K. M. Nichols},
  year = {1986},
  doi = {10.3133/ofr8639},
  url = {https://pubs.usgs.gov/publication/ofr8639},
  note = {Source identifier: ofr8639}
}