@misc{indiciae7bacb213d1cf,
  title = {GRA prospectus; optimizing protected areas for conservation, September 2001},
  author = {David Halsing and Richard Bernknopf},
  year = {2002},
  doi = {10.3133/ofr0267},
  url = {https://pubs.usgs.gov/publication/ofr0267},
  note = {Source identifier: ofr0267}
}