@misc{indiciaea6fc97ccaeca,
  title = {Aeromagnetic map of Palo Alto and vicinity, California},
  author = {Gerda A. Abrams and R.P. Kucks and Robert E. Bracken},
  year = {1991},
  doi = {10.3133/ofr91336},
  url = {https://pubs.usgs.gov/publication/ofr91336},
  note = {Source identifier: ofr91336}
}