@misc{indiciae20bf359f5dcb,
  title = {Geology of the southern part of Archuleta County, Colorado},
  author = {Gordon H. Wood and V.C. Kelley and A.J. MacAlpin},
  year = {1948},
  doi = {10.3133/om81},
  url = {https://pubs.usgs.gov/publication/om81},
  note = {Source identifier: om81}
}