@misc{indiciae3c445bdacaaa,
  title = {Environmental auditing: Capabilities and management utility of recreation impact monitoring programs},
  author = {J. L. Marion},
  year = {1995},
  doi = {10.1007/bf02471958},
  url = {https://pubs.usgs.gov/publication/5223258},
  note = {Source identifier: 5223258}
}