About OKADA TOMONARI
About 国土技術政策総合研
About FURUKAWA KEITA
About 国土技術政策総合研
About 海洋開発論文集
About canal
About water mass
About bay
About habitat
About environmental conservation
About Environment
About water purification
About dissolved oxygen
About water environment
About Tokyo Bay
About oxygen-deficient water mass
About Water pollution in general
About 運河
About 貧酸素水塊
About 内湾