@misc{indiciaeaf42891f7b8b,
  title = {Geologic map of the Afton Quadrangle and part of the Big Piney Quadrangle, Lincoln and Sublette counties, Wyoming},
  author = {W.W. Rubey},
  year = {1973},
  doi = {10.3133/i686},
  url = {https://pubs.usgs.gov/publication/i686},
  note = {Source identifier: i686}
}