@misc{indiciae488814be0986,
  title = {Geology of the Nefsy Divide quadrangle, Crook County, Wyoming},
  author = {C. L. Pillmore and W. J. Mapel},
  year = {1963},
  doi = {10.3133/b1121e},
  url = {https://pubs.usgs.gov/publication/b1121E},
  note = {Source identifier: b1121E}
}