@misc{indiciaed33af292d1f8,
  title = {Geologic history of the Yosemite Valley},
  author = {Francois E. Matthes},
  year = {1930},
  doi = {10.3133/pp160},
  url = {https://pubs.usgs.gov/publication/pp160},
  note = {Source identifier: pp160}
}