@misc{indiciae3cb01ce3f34c,
  title = {Nowitna National Wildlife Refuge land cover mapping project user's guide},
  author = {Carl J. Markon},
  year = {1988},
  doi = {10.3133/70159130},
  url = {https://pubs.usgs.gov/publication/70159130},
  note = {Source identifier: 70159130}
}