Não informado. (1964). Design engineering, materials and components. Product Journals.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Design Engineering, Materials and Components. London: Product Journals, 1964.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Design Engineering, Materials and Components. Product Journals, 1964.
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