@misc{indiciae806b9143e223,
  title = {Photogeologic map, Agathla Peak 6 quadrangle, Navajo County, Arizona},
  author = {W.H. Eckstein},
  year = {1953},
  doi = {10.3133/ofr5360},
  url = {https://pubs.usgs.gov/publication/ofr5360},
  note = {Source identifier: ofr5360}
}