@misc{indiciae58a986072b9a,
  title = {Bituminous sandstone deposits of Point Arena, Mendocino County, California},
  author = {Clifford Norton Holmes and Benjamin M. Page and Donald Cave Duncan},
  year = {1951},
  doi = {10.3133/om125},
  url = {https://pubs.usgs.gov/publication/om125},
  note = {Source identifier: om125}
}