@misc{indiciae1031ebb36eb9,
  title = {Nitrate deposits in southeastern California: With notes on deposits in southeastern Arizona and southwestern New Mexico},
  author = {Levi Fatzinger Noble},
  year = {1931},
  doi = {10.3133/b820},
  url = {https://pubs.usgs.gov/publication/b820},
  note = {Source identifier: b820}
}