@misc{indiciae751e39742e53,
  title = {Nitrate deposits in the Amargosa region, southeastern California},
  author = {Levi Fatzinger Noble and George Rogers Mansfield},
  year = {1922},
  doi = {10.3133/b724},
  url = {https://pubs.usgs.gov/publication/b724},
  note = {Source identifier: b724}
}