SHARMA P C. (2006). TEXTBOOK OF PRODUCTION TECHNOLOGY (6TH.). S CHAND & CO. LTD.
Lua i Stíl Chicago (17ú heag.)SHARMA P C. TEXTBOOK OF PRODUCTION TECHNOLOGY. 6TH. NEW DELHI: S CHAND & CO. LTD, 2006.
Lua MLA (9ú heag.)SHARMA P C. TEXTBOOK OF PRODUCTION TECHNOLOGY. 6TH. S CHAND & CO. LTD, 2006.
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