@misc{indiciaee25a8df6cf3c,
  title = {Preliminary Aeromagnetic Map of Joshua Tree National Park and Vicinity, Southern California},
  author = {V.E. Langenheim and P. L. Hill},
  year = {2010},
  doi = {10.3133/ofr20101070},
  url = {https://pubs.usgs.gov/publication/ofr20101070},
  note = {Source identifier: ofr20101070}
}