About YOKOYAMA KEIKO
About management organization
About NPO
About development
About profit management
About worth
About similarity
About cooperation
About recognition
About business objective
About value creation
About joint development
About collaboration
About similarity
About Social Values
About interorganizational relation
About necessity
About Management engineering in general
About 組織間関係
About 戦略
About 企業
About NPO
About 協働
About 価値創造
About 自己
About 利益
About 関係性
About 共同
About 開発
About 比較分析