@misc{indiciae8add7bbe58ab,
  title = {Long-term changes in nitrate conditions over the 20th century in two Midwestern Corn Belt streams},
  author = {Valerie J. Kelly and Edward G. Stets and Charles G. Crawford},
  year = {2015},
  doi = {10.1016/j.jhydrol.2015.03.062},
  url = {https://pubs.usgs.gov/publication/70162084},
  note = {Source identifier: 70162084}
}