@misc{indiciae211c7cc4fcd9,
  title = {Geologic map of the Three Bar Ranch Quadrangle, Montana and Wyoming},
  author = {M.W. McLellan and L. H. Biewick},
  year = {1990},
  doi = {10.3133/i2016},
  url = {https://pubs.usgs.gov/publication/i2016},
  note = {Source identifier: i2016}
}