@misc{indiciae00139791ce30,
  title = {Breccia pipe and geologic map of the southeastern Hualapai Indian Reservation and vicinity, Arizona},
  author = {G. H. Billingsley and K. J. Wenrich and P. W. Huntoon},
  year = {1986},
  doi = {10.3133/ofr86458b},
  url = {https://pubs.usgs.gov/publication/ofr86458B},
  note = {Source identifier: ofr86458B}
}