@misc{indiciae1ad0905aff74,
  title = {Escherichia coli Concentrations in Recreational Streams and Backcountry Drinking-Water Supplies in Shenandoah National Park, Virginia, 2005-2006},
  author = {Kenneth Hyer},
  year = {2007},
  doi = {10.3133/sir20075160},
  url = {https://pubs.usgs.gov/publication/sir20075160},
  note = {Source identifier: sir20075160}
}