@misc{indiciae25b7e3fc6f73,
  title = {Geologic map of The Grandstand Quadrangle, northern Mohave County, Arizona},
  author = {G. H. Billingsley},
  year = {1993},
  doi = {10.3133/ofr93588},
  url = {https://pubs.usgs.gov/publication/ofr93588},
  note = {Source identifier: ofr93588}
}