@misc{indiciae7a03ed45a96d,
  title = {Agricultural land use and water quality in the upper St. Joseph River basin, Michigan},
  author = {T. Ray Cummings},
  year = {1978},
  doi = {10.3133/ofr78950},
  url = {https://pubs.usgs.gov/publication/ofr78950},
  note = {Source identifier: ofr78950}
}