@misc{indiciaec00e1e6b7981,
  title = {Vegetation classification and mapping, Vicksburg National Military Park, Mississippi},
  author = {Chris Lea and Robert G. Waltermire and Carl Nordman},
  year = {2013},
  url = {https://pubs.usgs.gov/publication/70046565},
  note = {Source identifier: 70046565}
}