@misc{indiciae79272b5740da,
  title = {Silurian rugose corals of the Klamath Mountains region, California},
  author = {Charles Warren Merriam},
  year = {1972},
  doi = {10.3133/pp738},
  url = {https://pubs.usgs.gov/publication/pp738},
  note = {Source identifier: pp738}
}