@misc{indiciae91adee29dca5,
  title = {Bouguer gravity map of Hualapai Valley, Mohave County, Arizona},
  author = {W. E. Davis and Arthur Conradi},
  year = {1981},
  doi = {10.3133/ofr81770},
  url = {https://pubs.usgs.gov/publication/ofr81770},
  note = {Source identifier: ofr81770}
}