2009-12-28 EPR 環境 http://www.google.co.jp/search?hl=ja&rlz=1G1GGLQ_JAJP260&q=epr+%E7%92%B0%E5%A2%83&lr=&aq=0r&oq=epr+%E3%81%8B%E3%82%93