@misc{indiciae1735bd7d728d,
  title = {Long-term decreases in phosphorus and suspended solids, but not nitrogen, in six upper Mississippi River tributaries, 1991–2014},
  author = {Rebecca Kreiling and Jeffrey N. Houser},
  year = {2016},
  doi = {10.1007/s10661-016-5464-3},
  url = {https://pubs.usgs.gov/publication/70174673},
  note = {Source identifier: 70174673}
}