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GUPTA A.K, . (2017). ENGINEERING MANAGEMENT. NEW DELHI: S CHAND AND COMPANY PVT LTD.
GUPTA A.K, . 2017. ENGINEERING MANAGEMENT. NEW DELHI: S CHAND AND COMPANY PVT LTD.
GUPTA A.K, . ENGINEERING MANAGEMENT. NEW DELHI: S CHAND AND COMPANY PVT LTD. 2017.