@misc{indiciae852d91b7d3de,
  title = {Survey of helium in natural water wells and springs in Southwest Montana and Imperial Valley, California; Part VI, Jan. 1 - Dec. 31, 1983},
  author = {W. P. Doering and Irving Friedman},
  year = {1984},
  doi = {10.3133/ofr84422},
  url = {https://pubs.usgs.gov/publication/ofr84422},
  note = {Source identifier: ofr84422}
}