@misc{indiciae80bffe3e92cf,
  title = {Nutrient concentrations and yields in undeveloped stream basins of the United States},
  author = {G. M. Clark and D. K. Mueller and M.A. Mast},
  year = {2007},
  doi = {10.1111/j.1752-1688.2000.tb04311.x},
  url = {https://pubs.usgs.gov/publication/70022677},
  note = {Source identifier: 70022677}
}