About NAKAJIMA K
About Government Industrial Research Inst. Nagoya
About ISHIZUKA T
About Government Industrial Research Inst. Nagoya
About SUNAHARA H
About Hiroshima Univ.
About Water Research
About water pollution
About activated sludge
About Water pollution in general
About 水質汚濁物質
About 全酸素要求量
About 元素
About 酸素要求量
About 役割り