Columbia subject headings:
Harvard subject headings:
Hazardous geographic environments--California--San Francisco Bay Area.
Landslides--California--San Francisco Bay Area.
Princeton subject headings:
Debris avalanches--California--San Francisco Bay Area.
Films for the hearing impaired.
Hazardous geographic environments--California--San Francisco Bay Area.
Landslides--California--San Francisco Bay Area.
Mudflows--California--San Francisco Bay Area.
Video recordings.