@misc{indiciae0fdeb2add0f4,
  title = {Geologic map of the Russell Spring quadrangle, northern Mohave County, Arizona},
  author = {G. H. Billingsley},
  year = {1993},
  doi = {10.3133/ofr93717},
  url = {https://pubs.usgs.gov/publication/ofr93717},
  note = {Source identifier: ofr93717}
}