@misc{indiciae5bd8b535bfc2,
  title = {Map showing relative ease of excavation in the Salina quadrangle, Utah},
  author = {Paul L. Williams},
  year = {1972},
  doi = {10.3133/i591j},
  url = {https://pubs.usgs.gov/publication/i591J},
  note = {Source identifier: i591J}
}