@misc{indiciae7f126e221a5a,
  title = {Logistic model of nitrate in streams of the upper-midwestern United States},
  author = {D. K. Mueller and B. C. Ruddy and W.A. Battaglin},
  year = {1997},
  doi = {10.2134/jeq1997.00472425002600050005x},
  url = {https://pubs.usgs.gov/publication/70019480},
  note = {Source identifier: 70019480}
}