@misc{indiciaea85b717482ad,
  title = {Geologic map of the Tungsten quadrangle, Boulder, Gilpin, and Jefferson Counties, Colorado},
  author = {Dolores J. Gable},
  year = {1972},
  doi = {10.3133/gq978},
  url = {https://pubs.usgs.gov/publication/gq978},
  note = {Source identifier: gq978}
}