@misc{indiciae9d2b8e703e2d,
  title = {Map of land status in the Tucson area, Arizona, 1973},
  author = {U.S. Department of Agriculture and Arizona Water Commission},
  year = {1973},
  doi = {10.3133/i844a},
  url = {https://pubs.usgs.gov/publication/i844A},
  note = {Source identifier: i844A}
}