@misc{indiciae7388846e2743,
  title = {Surface-water-quality assessment of the lower Kansas River basin, Kansas and Nebraska: Results of investigations, 1987-90},
  author = {John O. Helgesen},
  year = {1996},
  doi = {10.3133/wsp2451},
  url = {https://pubs.usgs.gov/publication/wsp2451},
  note = {Source identifier: wsp2451}
}