@misc{indiciae0715318e793a,
  title = {A soil-gas helium survey of the Hualapai Indian Reservation, Northwest Arizona},
  author = {C.G. Bowles and G.M. Reimer},
  year = {1986},
  doi = {10.3133/ofr8636},
  url = {https://pubs.usgs.gov/publication/ofr8636},
  note = {Source identifier: ofr8636}
}