@misc{indiciae77d309194bfe,
  title = {Map showing depth to water in wells in the Tucson area, Arizona, 1972},
  author = {W. R. Osterkamp},
  year = {1973},
  doi = {10.3133/i844d},
  url = {https://pubs.usgs.gov/publication/i844D},
  note = {Source identifier: i844D}
}