@misc{indiciaeb9da755ce9e4,
  title = {Radioactivity of the rocks of the batholith of southern California},
  author = {Esper S. Larsen and N.B. Keevil},
  year = {1947},
  doi = {10.1130/0016-7606(1947)58[483:rotrot]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70220013},
  note = {Source identifier: 70220013}
}