@misc{indiciae602cbd1217cf,
  title = {Reconnaissance for mercury over geothermal areas of the Imperial Valley, California},
  author = {Margaret Hinkle and William W. Vaughn},
  year = {1973},
  doi = {10.3133/ofr73113},
  url = {https://pubs.usgs.gov/publication/ofr73113},
  note = {Source identifier: ofr73113}
}