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| 1 | policies, plans, and technology for managing the aquatic environment and protecting the environment | 水質環境管理・環境保全のための政策、計画、技術 | |||
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| 1 | policies, plans, and technology for managing the aquatic environment and protecting the environment | 水質環境管理・環境保全のための政策、計画、技術 | |||