@misc{indiciaec7f4a52ff176,
  title = {Aeromagnetic map of the Long Beach 1:100,000 scale-quadrangle, California},
  author = {V.E. Langenheim and R.C. Jachens},
  year = {1996},
  doi = {10.3133/ofr96287},
  url = {https://pubs.usgs.gov/publication/ofr96287},
  note = {Source identifier: ofr96287}
}