@misc{indiciae1dca5db88aa0,
  title = {A digitized map of seismic ground response of the San Francisco Bay region, California},
  author = {J. F. Gibbs and J. P. Eaton},
  year = {1971},
  doi = {10.3133/ofr71119},
  url = {https://pubs.usgs.gov/publication/ofr71119},
  note = {Source identifier: ofr71119}
}