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2. 2) A. Minet: The Production of Aluminum and Its Industrial Use-Primary Source Edition (American Edition), John Wiley and Sons, New York, (1905), [Nabu Public Domain Reprints]
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4. 4) N. F. Budgen: Aluminium and Its Alloys, Second Edition, Pitman Publishing Corporation, (1947).
5. 5) 西村秀雄：随筆・軽合金史（其一），軽金属時代，No. 172（1948），2.