@misc{indiciaec9a041d1b980,
  title = {Colorado River campsite monitoring, Grand Canyon National Park, Arizona, 1998-2012},
  author = {Matt Kaplinski and Joe Hazel and Rod Parnell and Daniel R. Hadley and Paul Grams},
  year = {2014},
  doi = {10.3133/ofr20141161},
  url = {https://pubs.usgs.gov/publication/ofr20141161},
  note = {Source identifier: ofr20141161}
}