@misc{indiciae2153f2a82993,
  title = {A strategy to inventory the biological resources of the national park system of the USA},
  author = {M.A. Ruggiero and T.J. Stohlgren and G.S. Waggoner},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/70127589},
  note = {Source identifier: 70127589}
}