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"johkasou reading book - trump card for domestic wastewater treatment in changing times"

Edited and published by Charitable Trust Shibayama Daigoro Memorial Merger Processing johkasou Research Fund Technology Working Group
Public interest incorporated foundation
Japan Education Center of Environmental Sanitation
2-23-3 Kikugawa, Sumida-ku, Tokyo
TEL: 03-3635-4880 (Switchboard),

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