About SAKURAI KATSUHIRO
About SHIBUSAWA HIROYUKI
About 豊橋技科大 建築・都市システム系
About NAKAYAMA KEIKO
About Aichi prefecture
About river
About environmental policy
About regional economy
About local government
About simulation
About agricultural district
About water pollution
About environmental conservation
About economy(efficiency)
About economic model
About economic analysis
About water pollutants
About simulation model
About Toyogawa River
About Water pollution in general
About 豊川
About 流域
About 環境経済
About 政策
About 影響分析