@misc{indiciaec8451fa3031b,
  title = {Maps showing elevation of bedrock and implications for design of engineered structures to withstand earthquake shaking in San Mateo County, California},
  author = {W.H. Hensolt and E. E. Brabb},
  year = {1990},
  doi = {10.3133/ofr90496},
  url = {https://pubs.usgs.gov/publication/ofr90496},
  note = {Source identifier: ofr90496}
}