@misc{indiciaecc5928af27de,
  title = {Principal facts for 398 gravity stations in the Palo Alto 7.5' quadrangle, California},
  author = {Steven F. Carle and Victoria E. Langenheim},
  year = {1990},
  doi = {10.3133/ofr9017a},
  url = {https://pubs.usgs.gov/publication/ofr9017A},
  note = {Source identifier: ofr9017A}
}