@misc{indiciaef61acfb684e7,
  title = {Geologic map of bastnaesite deposits of the Birthday claims, San Bernardino County, California},
  author = {William N. Sharp and Lloyd Charles Pray},
  year = {1952},
  doi = {10.3133/ofr52137},
  url = {https://pubs.usgs.gov/publication/ofr52137},
  note = {Source identifier: ofr52137}
}