@misc{indiciaeee4588e67829,
  title = {GRA prospectus: optimizing design and management of protected areas},
  author = {Richard Bernknopf and David Halsing},
  year = {2001},
  doi = {10.3133/ofr01404},
  url = {https://pubs.usgs.gov/publication/ofr01404},
  note = {Source identifier: ofr01404}
}