About KISHI M
About Hokkaido Inst. Technol.
About OGASAWARA T
About Hokkaido Inst. Technol.
About 北海道工業大学研究紀要
About water treatment
About 水質浄化
About Water supply,drainage and sanitary equipment in buildings
About Chemical treatment of water
About 公共施設
About 水質浄化