@misc{indiciae412278496658,
  title = {Land use change map, 1970-1972, Washington urban area, D.C., Maryland, and Virginia},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1975},
  doi = {10.3133/i858d},
  url = {https://pubs.usgs.gov/publication/i858D},
  note = {Source identifier: i858D}
}