@misc{indiciae6f4fc3066267,
  title = {Preliminary geologic map and cross-section of the Clear Lake volcanic field, Lake County, California},
  author = {B. C. Hearn and J.M. Donnelly and Fraser E. Goff},
  year = {1976},
  doi = {10.3133/ofr76751},
  url = {https://pubs.usgs.gov/publication/ofr76751},
  note = {Source identifier: ofr76751}
}