@misc{indiciaeb7f4c04cb026,
  title = {Preliminary geologic map of the Spruce Mountain-4 Quadrangle, Elko County, Nevada},
  author = {George D. Fraser and K. B. Ketner and Marjorie C. Smith},
  year = {1983},
  doi = {10.3133/ofr83301},
  url = {https://pubs.usgs.gov/publication/ofr83301},
  note = {Source identifier: ofr83301}
}