About KOBATAKE SHIGEKI
About KATADA TOSHITAKA
About YOSHIZAWA TAKUMI
About 国土交通省 関東地方整備局 利根川水系砂防事務所
About IWANAMI HIDEYUKI
About 国際航業
About 自然災害科学
About mudflow deposit damage
About disaster prevention countermeasure
About Natural disasters
About Development,redevelopment,and urban improvement
About 住民参加
About 土砂災害
About 構築