@misc{indiciae9d47e2a0cada,
  title = {Geologic map of the Beartooth Butte quadrangle, Park County, Wyoming},
  author = {William Gamewell Pierce and Willis H. Nelson},
  year = {1971},
  doi = {10.3133/gq935},
  url = {https://pubs.usgs.gov/publication/gq935},
  note = {Source identifier: gq935}
}