@misc{indiciae70ef25723f71,
  title = {Outdoors America: recreational opportunities on public lands},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1998},
  doi = {10.3133/70189681},
  url = {https://pubs.usgs.gov/publication/70189681},
  note = {Source identifier: 70189681}
}