@misc{indiciae137ce58de3cb,
  title = {Preliminary report on the ground-water resources of the Navajo and Hopi Indian Reservations, Arizona, New Mexico and Utah},
  author = {Leonard Cameron Halpenny and John William Harshbarger},
  year = {1951},
  doi = {10.3133/ofr51113},
  url = {https://pubs.usgs.gov/publication/ofr51113},
  note = {Source identifier: ofr51113}
}