@misc{indiciaeaff25806ab0e,
  title = {Developing a map of geologically defined site-condition categories for California},
  author = {C.J. Wills and K.B. Clahan},
  year = {2006},
  doi = {10.1785/0120050179},
  url = {https://pubs.usgs.gov/publication/70028308},
  note = {Source identifier: 70028308}
}