@misc{indiciae242860d11e38,
  title = {Preliminary geologic map and cross section of the Saddle Quadrangle, Garfield County, Colorado},
  author = {R. C. Johnson},
  year = {1977},
  doi = {10.3133/mf829},
  url = {https://pubs.usgs.gov/publication/mf829},
  note = {Source identifier: mf829}
}