@misc{indiciaeca709458c561,
  title = {Water quality and possible sources of nitrate in the Cimarron Terrace Aquifer, Oklahoma, 2003},
  author = {Jason R. Masoner and Shana L. Mashburn},
  year = {2004},
  doi = {10.3133/sir20045221},
  url = {https://pubs.usgs.gov/publication/sir20045221},
  note = {Source identifier: sir20045221}
}