On the Viscosity of acid and basic open hearth and cupola furnace slags in molten state. Osaka, Japan: The Taniguchi Kōgyō Shōrei Kwai (The Taniguchi Foundation for the Promotion of Industrial Progress) - Matsukawa, Tatsuo (The Taniguchi Kōgyō Shōrei Kwai (The Taniguchi Foundation for the Promotion of Industrial Progress), 1935)