About KATSURA SHIN'YA
About AOKI TOSHIYA
About YOSHINO TAKAHIKO
About unsaturated soil
About test
About pressure head
About water content
About characteristic curve
About slope failure
About analysis
About dam
About introduction of case
About seepage analysis
About water characterization curve
About volume water content
About natural dam
About water retention test
About Field surveys,soil tests
About Water permeability,seepage water,soil water
About 実験
About 室内試験
About 土壌水分特性
About 試験
About 土
About 保水性試験