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宗宮 尚行, 山根 徳治. "(257)光度滴定法に依る二,三の市販非鐵金屬及び鹽類中の微量鐵分定量並に含白金亞鉛に依る鐵イオンの新還元法." The Journal of the Society of Chemical Industry Japan 41.12 (1938) 874-877