@misc{indiciaef97a3238514a,
  title = {Results from laboratory and field testing of nitrate measuring spectrophotometers},
  author = {Teri T. Snazelle},
  year = {2015},
  doi = {10.3133/ofr20151065},
  url = {https://pubs.usgs.gov/publication/ofr20151065},
  note = {Source identifier: ofr20151065}
}