@misc{indiciae745e7c1ef62f,
  title = {Isotopic evidence of nitrate sources and denitrification in the Mississippi River, Illinois},
  author = {S.V. Panno and Keith C. Hackley and W.R. Kelly and H.-H. Hwang},
  year = {2006},
  doi = {10.2134/jeq2005.0012},
  url = {https://pubs.usgs.gov/publication/70030697},
  note = {Source identifier: 70030697}
}