@misc{indiciae7ea8c5c0d077,
  title = {Geologic map of Lava Beds National Monument, Northern California},
  author = {J.M. Donnelly-Nolan and D E. Champion},
  year = {1987},
  doi = {10.3133/i1804},
  url = {https://pubs.usgs.gov/publication/i1804},
  note = {Source identifier: i1804}
}