@misc{indiciaec4321d5b7095,
  title = {Map of irrigated land in the Phoenix area, Arizona},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and U.S. Department of Agriculture and Arizona Water Commission},
  year = {1973},
  doi = {10.3133/i845b},
  url = {https://pubs.usgs.gov/publication/i845B},
  note = {Source identifier: i845B}
}