@misc{indiciae80c32263237c,
  title = {Land use map for Ajo quadrangle, Arizona, and complementary tables for census tracts, drainage basins, land use, and soils},
  author = {Robin Fegeas},
  year = {1974},
  doi = {10.3133/ofr7490},
  url = {https://pubs.usgs.gov/publication/ofr7490},
  note = {Source identifier: ofr7490}
}