@misc{indiciaec0a4dd384e74,
  title = {Causes of variations in water quality and aquatic ecology in rivers of the Upper Mississippi River Basin, Minnesota and Wisconsin},
  author = {James R. Stark},
  year = {1996},
  doi = {10.3133/fs24996},
  url = {https://pubs.usgs.gov/publication/fs24996},
  note = {Source identifier: fs24996}
}