About KAWABATA SHIN'ICHIRO
About KAMIYA MITSUHIKO
About OSAWA MASATO
About 北海道農業近代化コンサルタント
About cold region
About サクション
About Soil improvement and stabilization
About Glaciologic engineering,cold region construction
About 試験盛土
About 石灰安定処理
About 凍上
About 抑制効果