@misc{indiciae64487fe70d8c,
  title = {Percentage of Probability of Nonpoint-Source Nitrate Contamination of Recently Recharged Ground Water in the High Plains Aquifer},
  author = {Sharon L. Qi and Jason J. Gurdak},
  year = {2006},
  doi = {10.3133/ds192},
  url = {https://pubs.usgs.gov/publication/ds192},
  note = {Source identifier: ds192}
}