@misc{indiciaea14c5fcfa550,
  title = {Nitrate deposits in southern Idaho and eastern Oregon},
  author = {G. R. Mansfield},
  year = {1916},
  doi = {10.3133/b620b},
  url = {https://pubs.usgs.gov/publication/b620B},
  note = {Source identifier: b620B}
}