@misc{indiciaeda513b293607,
  title = {Paleozoic-Mesozoic boundary in the Berry Creek Quadrangle, northwestern Sierra Nevada, California},
  author = {Anna Martta Hietanen},
  year = {1977},
  doi = {10.3133/pp1027},
  url = {https://pubs.usgs.gov/publication/pp1027},
  note = {Source identifier: pp1027}
}