@misc{indiciae58a382b5117f,
  title = {Map showing distribution, composition, and age of late Cenozoic volcanic centers in California and Nevada},
  author = {R. G. Luedke and R. L. Smith},
  year = {1981},
  doi = {10.3133/i1091c},
  url = {https://pubs.usgs.gov/publication/i1091C},
  note = {Source identifier: i1091C}
}