@misc{indiciae6b7332d405c2,
  title = {Outdoors America: recreational opportunites on public lands},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1992},
  doi = {10.3133/70039580},
  url = {https://pubs.usgs.gov/publication/70039580},
  note = {Source identifier: 70039580}
}