About YUYAMA YOSHITO
About 農研機構
About 農村計画学会誌
About internationalization
About rural planning
About problem
About research and development
About management strategy
About renewable energy
About biomass
About behavior(manner)
About globalization
About energy challenge
About commercialization
About Renewable Energy
About philanthropy
About Biomars fuels and refuse derived fuels
About Natural energy in general
About グローバル化
About 農村計画
About エネルギー課題