@misc{indiciae9d27474ad749,
  title = {Photogeologic map of the Chaco Canyon 3 quadrangle, McKinley County, New Mexico},
  author = {Allan N. Kover and A. B. Olson},
  year = {1967},
  doi = {10.3133/ofr67141},
  url = {https://pubs.usgs.gov/publication/ofr67141},
  note = {Source identifier: ofr67141}
}