@misc{indiciae6c0d37a31faf,
  title = {Status of ownership of part of the lands on which phosphate-bearing beds outcrop in southwestern Montana and northeastern Idaho},
  author = {Emerson C. Willey and E. R. Cressman and H.W. Peirce and T. M. Cheney},
  year = {1955},
  doi = {10.3133/ofr55197},
  url = {https://pubs.usgs.gov/publication/ofr55197},
  note = {Source identifier: ofr55197}
}