@misc{indiciae0cd788a27cd0,
  title = {Regional estimates of the amount of U.S. agricultural land located in watersheds with poor water quality},
  author = {Richard A. Smith and Gregory E. Schwarz and Richard B. Alexander},
  year = {1994},
  doi = {10.3133/ofr94399},
  url = {https://pubs.usgs.gov/publication/ofr94399},
  note = {Source identifier: ofr94399}
}