@misc{indiciaede78ef99f4e0,
  title = {The hydrothermal system in southern Grass Valley, Pershing County, Nevada},
  author = {Alan H. Welch and M.L. Sorey and F. H. Olmsted},
  year = {1981},
  doi = {10.3133/ofr81915},
  url = {https://pubs.usgs.gov/publication/ofr81915},
  note = {Source identifier: ofr81915}
}