@misc{indiciae44b7dfed8d3d,
  title = {Determination of nitrates in saline minerals},
  author = {Laura E. Reichen and Joseph J. Fahey},
  year = {1968},
  doi = {10.3133/b1214f},
  url = {https://pubs.usgs.gov/publication/b1214F},
  note = {Source identifier: b1214F}
}