@misc{indiciaeee7970af6fba,
  title = {Regional nutrient trends in streams and rivers of the United States, 1993-2003},
  author = {Lori A. Sprague and David L. Lorenz},
  year = {2009},
  doi = {10.1021/es803664x},
  url = {https://pubs.usgs.gov/publication/70035134},
  note = {Source identifier: 70035134}
}