@misc{indiciae9bd43cb2579e,
  title = {Nitrate concentrations, 1936-99, and pesticide concentrations, 1990-99, in the unconfined aquifer in the San Luis Valley, Colorado},
  author = {Stogner},
  year = {2001},
  doi = {10.3133/wri014131},
  url = {https://pubs.usgs.gov/publication/wri014131},
  note = {Source identifier: wri014131}
}