@misc{indiciaef2ebd0d71835,
  title = {Geology of the Clifton quadrangle, Wyoming and South Dakota},
  author = {Norman P. Cuppels},
  year = {1963},
  doi = {10.3133/b1063h},
  url = {https://pubs.usgs.gov/publication/b1063H},
  note = {Source identifier: b1063H}
}