@misc{indiciae4340b06056df,
  title = {Geologic map of the Bull Mountain area, Jefferson County, Montana},
  author = {R. A. Weeks},
  year = {1974},
  doi = {10.3133/ofr74354},
  url = {https://pubs.usgs.gov/publication/ofr74354},
  note = {Source identifier: ofr74354}
}