Geologists have uncovered geologic evidence that supports historical narratives for two earthquakes in the 68 years prior to San Francisco's devastating 1906 disaster ...
http://www.sciencedaily.com/releases/2014/02/140212132938.ht
Geologists have uncovered geologic evidence that supports historical narratives for two earthquakes in the 68 years prior to San Francisco's devastating 1906 disaster ...
http://www.sciencedaily.com/releases/2014/02/140212132938.ht
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