About KAWAHARA SOICHIRO
About alluvial plain (geomorphology)
About surface layer structure
About urban structure
About civil engineering history
About highland
About embankment (earth)
About soil profile
About sampling
About soil test
About physical properties of soil
About N value
About culture (civilization)
About reliability (property)
About castle town
About 宇賀山
About 松江平野
About folklore
About Field surveys,soil tests
About Civil engineering in general
About 表層
About 地盤特性
About 城下町
About 造成
About 関連性