@misc{indiciaed6e18704d152,
  title = {Nitrogen in streams of the upper Tennessee River basin, 1970-93},
  author = {M. W. Treece and G. C. Johnson},
  year = {1997},
  doi = {10.3133/ofr97117},
  url = {https://pubs.usgs.gov/publication/ofr97117},
  note = {Source identifier: ofr97117}
}