@misc{indiciae0e241cf787cc,
  title = {Photogeologic map of the Fredonia NW quadrangle, Mohave County, Arizona},
  author = {W. R. Hemphill},
  year = {1956},
  doi = {10.3133/i133},
  url = {https://pubs.usgs.gov/publication/i133},
  note = {Source identifier: i133}
}