Khanna, P. N. (1997). Indian practical civil engineers’ handbook. New Delhi: Engineers’ Publishers & Advertisers.
Παραπομπή Chicago StyleKhanna, Prem Nath. Indian Practical Civil Engineers’ Handbook. New Delhi: Engineers’ Publishers & Advertisers, 1997.
Παραπομπή MLAKhanna, Prem Nath. Indian Practical Civil Engineers’ Handbook. New Delhi: Engineers’ Publishers & Advertisers, 1997.
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