@misc{indiciae78254fedec12,
  title = {Preliminary geologic map of the Segar Mountain Quadrangle, Rio Blanco County, Colorado},
  author = {R. B. O'Sullivan},
  year = {1974},
  doi = {10.3133/mf570},
  url = {https://pubs.usgs.gov/publication/mf570},
  note = {Source identifier: mf570}
}