@misc{indiciaecddbdf413f5d,
  title = {Atlas of urban and regional change, Tucson, Arizona, land use, 1970, and land use change, 1970-1972},
  author = {James R. Wray},
  year = {1975},
  doi = {10.3133/ofr75204},
  url = {https://pubs.usgs.gov/publication/ofr75204},
  note = {Source identifier: ofr75204}
}