Home › Authors › Japan. Kensetsu-sho. Kyūkeishachi hō kenkyū-kai 👤 Japan. Kensetsu-sho. Kyūkeishachi hō kenkyū-kai 1 book Books by Japan. Kensetsu-sho. Kyūkeishachi hō kenkyū-kai 急傾斜地法の解說. ... 急傾斜地法の解說. ... 1970