@misc{indiciaefadba1b764ad,
  title = {Breccia pipe and geologic map of the southwestern Hualapai Indian Reservation and vicinity, Arizona},
  author = {G. H. Billingsley and K. J. Wenrich and P. W. Huntoon and R.A. Young},
  year = {1990},
  doi = {10.3133/ofr86458d},
  url = {https://pubs.usgs.gov/publication/ofr86458D},
  note = {Source identifier: ofr86458D}
}