@misc{indiciae41a40b0a056e,
  title = {Geologic map of the Washboard Rock quadrangle, Gunnison, Montrose, and Ouray Counties, Colorado},
  author = {R. G. Dickinson},
  year = {1987},
  doi = {10.3133/gq1643},
  url = {https://pubs.usgs.gov/publication/gq1643},
  note = {Source identifier: gq1643}
}