@misc{indiciae730f2396579f,
  title = {Flatland deposits of the San Francisco Bay region, California — Their geology and engineering properties, and their importance to comprehensive planning},
  author = {Edward J. Helley and K. R. Lajoie and W. E. Spangle and M. L. Blair},
  year = {1979},
  doi = {10.3133/pp943},
  url = {https://pubs.usgs.gov/publication/pp943},
  note = {Source identifier: pp943}
}