Tiwari (NK) & Shandilya (Shishir k), . (2009). Operations Research. : PHI Learning Private Ltd.
Tiwari (NK) & Shandilya (Shishir k), . 2009. Operations Research. : PHI Learning Private Ltd.
Tiwari (NK) & Shandilya (Shishir k), . Operations Research. : PHI Learning Private Ltd. 2009.
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