@misc{indiciae54dfb5ba7a77,
  title = {Nitrate in ground water in the western Lake Michigan drainage basin, Wisconsin and Michigan},
  author = {David A. Saad},
  year = {1994},
  doi = {10.3133/fs07094},
  url = {https://pubs.usgs.gov/publication/fs07094},
  note = {Source identifier: fs07094}
}