@misc{indiciaefe4f68fb88ce,
  title = {Nutrients in the upper Mississippi River : scientific information to support management decisions},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2003},
  doi = {10.3133/fs10503},
  url = {https://pubs.usgs.gov/publication/fs10503},
  note = {Source identifier: fs10503}
}