About MORITA H
About Public Works Res. Inst. (PWRI), Ministry of Construction (MOC), Ibaraki, JPN
About TSUBOI H
About Japan Sci. and Technol. Corp., Ibraki, JPN
About Water Science & Technology
About sludge disposal
About sewage sludge
About Sludge treatment and disposal
About Heavy metals and their compounds in general
About 下水処理施設
About 重金属
About 化学
About 基礎
About 研究