About ARAKAWA H
About Hokkaido Inst. Technol., Sapporo
About WATANABE N
About Hokkaido Inst. Technol., Sapporo
About TAMURA R
About Kyoto Univ., Kyoto
About RAO C P
About Indian Inst. Technol. Bombay, Powai-Mumbai, IND
About Bulletin of the Chemical Society of Japan
About tannin
About gallic acid
About Heavy metals and their compounds in general
About Oxidation,reduction
About Gallic Acid
About Ethyl gallate
About Pyrogallol
About タンニン
About クロム酸カリウム
About 還元