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広島生まれの新エネ・省エネ技術 New energy & Energy saving technologies from Hiroshima

 

https://storys.jp/story/36561

 

節電虫の両親  

5.4 節電虫(益虫)の嫁ぎ先とISO14001  

 

日本語版と英語版で交互に連載中です。

 

Serially posted in Japanese and in English alternately.