@misc{indiciae2c1d84dadefc,
  title = {Land use and land cover in the greater Pittsburgh region, 1973},
  author = {J. R. Wray},
  year = {1980},
  doi = {10.3133/i1248},
  url = {https://pubs.usgs.gov/publication/i1248},
  note = {Source identifier: i1248}
}