@misc{indiciaedefd6233d49d,
  title = {Nitrate (NO2+NO3–N) in ground water of the Upper Snake River basin, Idaho and western Wyoming, 1991–95},
  author = {Michael G. Rupert},
  year = {1997},
  doi = {10.3133/wri974174},
  url = {https://pubs.usgs.gov/publication/wri974174},
  note = {Source identifier: wri974174}
}