@misc{indiciae335b73fd58e0,
  title = {Map showing the distribution of potassium feldspar and fossils in Mesozoic rocks of Marin and San Francisco Counties, and parts of Alameda, Contra Costa, and Sonoma Counties, California},
  author = {R. H. Wright},
  year = {1974},
  doi = {10.3133/mf573},
  url = {https://pubs.usgs.gov/publication/mf573},
  note = {Source identifier: mf573}
}