@misc{indiciae0aa767acc282,
  title = {Physical stratigraphy of the Phosphoria formation in northwestern Wyoming},
  author = {Richard Porter Sheldon},
  year = {1957},
  doi = {10.3133/b1042e},
  url = {https://pubs.usgs.gov/publication/b1042E},
  note = {Source identifier: b1042E}
}