About TOYOSAWA YASUO
About 斜面崩壊による労働災害防止に関する研究 平成18年度 総括研究年度終了報告書
About slope failure
About disaster prevention countermeasure
About Slope stability,deformation by excavating
About Field surveys,soil tests
About Occupational health,industorial accidents
About 斜面崩壊
About 労働
About 災害防止
About 研究