@misc{indiciae2a947e4c67d9,
  title = {Nitrogen and phosphorus in the Upper Mississippi River: Transport, processing, and effects on the river ecosystem},
  author = {J.N. Houser and W. B. Richardson},
  year = {2010},
  doi = {10.1007/s10750-009-0067-4},
  url = {https://pubs.usgs.gov/publication/70033911},
  note = {Source identifier: 70033911}
}