Science 14 April 2006 に EARTHQUAKE ANNIVERSARY（サンフランシスコ地震１００周年）に関連した記事２編
EARTHQUAKE ANNIVERSARY:
Halfway Through Reid's Cycle and Counting
William L. Ellsworth
EARTHQUAKE ANNIVERSARY:
Can Buildings Be Made Earthquake-Safe?
Mary C. Comerio
EARTHQUAKE ANNIVERSARY:
Halfway Through Reid's Cycle and Counting
William L. Ellsworth
EARTHQUAKE ANNIVERSARY:
Can Buildings Be Made Earthquake-Safe?
Mary C. Comerio