@misc{indiciae68b86c6a377f,
  title = {Willamette Basin, Oregon; nitrogen in streams and ground water, 1980-90},
  author = {Bernadine Bonn and D.A. Wentz and S.R. Hinkle},
  year = {1996},
  doi = {10.3133/ofr96227},
  url = {https://pubs.usgs.gov/publication/ofr96227},
  note = {Source identifier: ofr96227}
}