@misc{indiciaee1c85e93f0f3,
  title = {Geologic map of bastnaesite deposits, Birthday claims, San Bernardino County, California},
  author = {W. N. Sharp and L.C. Pray},
  year = {1952},
  doi = {10.3133/mf4},
  url = {https://pubs.usgs.gov/publication/mf4},
  note = {Source identifier: mf4}
}