@misc{indiciaeb11a3c4d34df,
  title = {Photogeologic map of the Agathla Peak 8 quadrangle, Navajo County, Arizona},
  author = {Richard G. Ray},
  year = {1952},
  doi = {10.3133/ofr52120},
  url = {https://pubs.usgs.gov/publication/ofr52120},
  note = {Source identifier: ofr52120}
}