@misc{indiciaefb223ce1ac66,
  title = {Geology and water resources of the Gila and San Carlos valleys in the San Carlos Indian Reservation, Arizona},
  author = {A.T. Schwennesen},
  year = {1921},
  doi = {10.3133/wsp450a},
  url = {https://pubs.usgs.gov/publication/wsp450A},
  note = {Source identifier: wsp450A}
}