Não informado. (2002). British machine tool engineering. Associated British Machine Tool Makers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. British Machine Tool Engineering. London: Associated British Machine Tool Makers, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. British Machine Tool Engineering. Associated British Machine Tool Makers, 2002.
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