@misc{indiciae1f714f5de41b,
  title = {Atlas of urban and regional change, greater Pittsburgh region, Pennsylvania; C. Land use change, 1969-73 (Allegheny County)},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1976},
  doi = {10.3133/ofr7528c},
  url = {https://pubs.usgs.gov/publication/ofr7528C},
  note = {Source identifier: ofr7528C}
}