@misc{indiciae7cfe0dcef56a,
  title = {Igneous geology of the Dry Mountain quadrangle, Jefferson County, Montana},
  author = {Harold J. Prostka},
  year = {1966},
  doi = {10.3133/b1221f},
  url = {https://pubs.usgs.gov/publication/b1221F},
  note = {Source identifier: b1221F}
}