@misc{indiciae9322f461fcee,
  title = {Map showing distribution of recoverable ground water in the Phoenix area, Arizona},
  author = {W. R. Osterkamp and P. P. Ross},
  year = {1976},
  doi = {10.3133/i845k},
  url = {https://pubs.usgs.gov/publication/i845K},
  note = {Source identifier: i845K}
}