@misc{indiciae6de9bbe6a56d,
  title = {Utilization of multiband aerial photographs in urban housing quality studies},
  author = {Barry S. Wellar},
  year = {1968},
  doi = {10.3133/ofr68320},
  url = {https://pubs.usgs.gov/publication/ofr68320},
  note = {Source identifier: ofr68320}
}