Não informado. (1969). Machine shop and metalworking economics. Engineering, Chemical & Machine Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Machine Shop and Metalworking Economics. London: Engineering, Chemical & Machine Press, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Machine Shop and Metalworking Economics. Engineering, Chemical & Machine Press, 1969.
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