@misc{indiciae93f05a63b406,
  title = {Study plan for urban stream indicator sites of the National Water-Quality Assessment Program},
  author = {T. J. Lopes and C. V. Price},
  year = {1997},
  doi = {10.3133/ofr9725},
  url = {https://pubs.usgs.gov/publication/ofr9725},
  note = {Source identifier: ofr9725}
}