@misc{indiciae583bc2aa1559,
  title = {Ground-water resources of the Holbrook region, Arizona},
  author = {Marshall A. Harrell and Edwin Butt Eckel},
  year = {1939},
  doi = {10.3133/wsp836b},
  url = {https://pubs.usgs.gov/publication/wsp836B},
  note = {Source identifier: wsp836B}
}