@misc{indiciae4a1d98c21137,
  title = {Geologic map of the Wolf Hole Mountain East quadrangle, northern Mohave County, Arizona},
  author = {George H. Billingsley},
  year = {1990},
  doi = {10.3133/ofr90644},
  url = {https://pubs.usgs.gov/publication/ofr90644},
  note = {Source identifier: ofr90644}
}