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Gupta N., Tiwari S., . (2008). A Textbook of Engineering Physics. New Delhi: Dhanpat Rai and co.
Gupta Navneet, Tiwari S.K, . 2008. A Textbook of Engineering Physics. New Delhi: Dhanpat Rai and co.
Gupta Navneet, Tiwari S.K, . A Textbook of Engineering Physics. New Delhi: Dhanpat Rai and co. 2008.