@misc{indiciae80362ab5469c,
  title = {Preliminary Geologic Map of the Weaverville Quadrangle, California},
  author = {William P. Irwin},
  year = {1963},
  doi = {10.3133/mf275},
  url = {https://pubs.usgs.gov/publication/mf275},
  note = {Source identifier: mf275}
}