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United Nations Environment Programme ,  Japan Society on Water Management ,  [Assessment and Promotion of Human Resources for River Water Quality Management] ,  Assessment and Promotion of Human Resources for River Water Quality Management

United Nations Environment Programme ,  [Action Plan for the Protection and Development of the Marine and Coastal Areas of the East Asian Region. UNEP Regional Seas Reports and Studies No. 24] ,  Action Plan for the Protection and Development of the Marine and Coastal Areas of the East Asian Region. UNEP Regional Seas Reports and Studies No. 24

United Nations Environment Programme ,  [Oil Pollution and its Control in the East Asian Seas Region - UNEP Regional Seas Reports and Studies No. 96] ,  Oil Pollution and its Control in the East Asian Seas Region - UNEP Regional Seas Reports and Studies No. 96