About ISHIKAWA YOSHIHARU
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About TORITA EIJI
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About NISHI MASATO
About 砂防フロンティア整備推進機構
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About MATSUO SHINJIRO
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About YAMADA TAKASHI
About large earthquake
About mudflow deposit damage
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About protective facility
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About The 2016 Kumamoto Earthquake
About caution refuge
About earth movement
About secondary disaster
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About Natural disasters
About General,sabo engineering
About 平成28年熊本地震
About 降雨
About 土砂移動
About 土砂災害