@misc{indiciae6729de344c50,
  title = {Geology and nickel mineralization of the Julian-Cuyamaca area, near Julian, San Diego County, California},
  author = {S. C. Creasey and H.J. Fraser},
  year = {1945},
  doi = {10.3133/ofr4575},
  url = {https://pubs.usgs.gov/publication/ofr4575},
  note = {Source identifier: ofr4575}
}