About NAKASONE H
About Ibaraki Univ., Ibaraki-ken, JPN
About OZAKI M
About Maebashi City Coll. Technology, Maebashi City, JPN
About Water Science & Technology
About sewage treatment plant
About Biological treatment of sewage and wastewater
About 接触曝気法
About 脱窒素
About 能力
About 研究