@misc{indiciae75a4477f754c,
  title = {Mass-balance model for predicting nitrate in ground water},
  author = {Michael H. Frimpter and John J. Donohue and Michael V. Rapacz},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/70015795},
  note = {Source identifier: 70015795}
}