@misc{indiciae04feb3532516,
  title = {Annual dissolved nitrite plus nitrate and total phosphorous loads for the Susquehanna, St. Lawrence, Mississippi-Atchafalaya, and Columbia River basins, 1968-2004},
  author = {Brent T. Aulenbach},
  year = {2006},
  doi = {10.3133/ofr20061087},
  url = {https://pubs.usgs.gov/publication/ofr20061087},
  note = {Source identifier: ofr20061087}
}