About OSAKO MASAHIRO
About 環境研 資源循環・廃棄物研究セ
About aging society with a falling birthrate
About population distribution
About domestic refuse
About waste treatment
About home nursing
About social welfare
About furtherance
About resident participation
About group
About home care
About Social Support
About self-help group
About Refuse treatment
About 廃棄物
About 高齢化社会
About 対策
About ごみ