@misc{indiciae194ab962737d,
  title = {Geologic map of the Little Clayhole Valley quadrangle, northern Mohave County, Arizona},
  author = {George H. Billingsley},
  year = {1994},
  doi = {10.3133/ofr94290},
  url = {https://pubs.usgs.gov/publication/ofr94290},
  note = {Source identifier: ofr94290}
}