@misc{indiciae2a391664eb4b,
  title = {Preliminary photogeologic map of the Chaco Canyon 1 15-minute quadrangle, McKinley County, New Mexico},
  author = {Willard L. McIntosh},
  year = {1975},
  doi = {10.3133/ofr75542},
  url = {https://pubs.usgs.gov/publication/ofr75542},
  note = {Source identifier: ofr75542}
}