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Gupta E.C, . (1994). The Text Book of Engineering Metallurgy. New Delhi: DPT R & Sons.
Gupta E.C, . 1994. The Text Book of Engineering Metallurgy. New Delhi: DPT R & Sons.
Gupta E.C, . The Text Book of Engineering Metallurgy. New Delhi: DPT R & Sons. 1994.