@misc{indiciae2ecbe28575f9,
  title = {Geologic map of Garfield quadrangle, Gunnison and Chaffee Counties, Colorado},
  author = {McClelland G. Dings and M. R. Brock},
  year = {1952},
  doi = {10.3133/ofr5233},
  url = {https://pubs.usgs.gov/publication/ofr5233},
  note = {Source identifier: ofr5233}
}