@misc{indiciae2a19ec6c6911,
  title = {Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches},
  author = {Gregory F. McIsaac and Mark B. David and George Z. Gertner and Donald A. Goolsby},
  year = {2002},
  doi = {10.2134/jeq2002.1610},
  url = {https://pubs.usgs.gov/publication/70185172},
  note = {Source identifier: 70185172}
}