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Satya Narayana Murthy Challa, . (2002). Water Resources Engineering,Ed2. New Delhi: New Age.
Satya Narayana Murthy Challa, . 2002. Water Resources Engineering,Ed2. New Delhi: New Age.
Satya Narayana Murthy Challa, . Water Resources Engineering,Ed2. New Delhi: New Age. 2002.