@misc{indiciae276930bec1f9,
  title = {Reconnaissance geologic map of the Hayfork Quadrangle, Trinity County, California},
  author = {W. P. Irwin},
  year = {1974},
  doi = {10.3133/mf576},
  url = {https://pubs.usgs.gov/publication/mf576},
  note = {Source identifier: mf576}
}