@misc{indiciaea3c1add5c7f4,
  title = {Geologic map and structure sections of the southwest quarter Willis Quadrangle, Beaverhead County, Montana},
  author = {Wayne Russell Lowell},
  year = {1953},
  doi = {10.3133/ofr53160},
  url = {https://pubs.usgs.gov/publication/ofr53160},
  note = {Source identifier: ofr53160}
}