@misc{indiciae02bd43f80611,
  title = {Great Dismal Swamp vegetative cover map},
  author = {Virginia Carter and Patricia T. Gammon},
  year = {1976},
  doi = {10.3133/ofr76615},
  url = {https://pubs.usgs.gov/publication/ofr76615},
  note = {Source identifier: ofr76615}
}