Não informado. (1956). International Metallurgical Reviews. Institute of Metals.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Metallurgical Reviews. London: Institute of Metals, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Metallurgical Reviews. Institute of Metals, 1956.
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