@misc{indiciaed7b519f64ace,
  title = {Geology of the Canyon Ferry quadrangle, Montana},
  author = {John Beaver Mertie and R. P. Fischer and S. W. Hobbs},
  year = {1951},
  doi = {10.3133/b972},
  url = {https://pubs.usgs.gov/publication/b972},
  note = {Source identifier: b972}
}