@misc{indiciae606a037fae5d,
  title = {Stratigraphic sections of the Phosphoria formation in Montana, 1948},
  author = {Montis Ruhl Klepper and F.S. Honkala and O.A. Payne and E. T. Ruppel},
  year = {1953},
  doi = {10.3133/cir260},
  url = {https://pubs.usgs.gov/publication/cir260},
  note = {Source identifier: cir260}
}