@misc{indiciaec2f778b4939a,
  title = {Preliminary geologic map of the Hermosa Peak Quadrangle, Dolores, San Juan, La Plata, and Montezuma counties, Colorado},
  author = {Walden P. Pratt},
  year = {1976},
  doi = {10.3133/ofr76314},
  url = {https://pubs.usgs.gov/publication/ofr76314},
  note = {Source identifier: ofr76314}
}