@misc{indiciae780e511ef7da,
  title = {Water-supply investigation of Fort Defiance area, Navajo Indian Reservation, Apache County, Arizona, with a section on quality of water},
  author = {L.C. Halpenny and S.C. Brown and J.D. Hem},
  year = {1949},
  doi = {10.3133/ofr4915},
  url = {https://pubs.usgs.gov/publication/ofr4915},
  note = {Source identifier: ofr4915}
}