519.5 GUP 35204 35203 35206 35207 38685 38686 38688 38689 38690 38691
Gupta, Prem Kumar . Problems in operations research ( principles) and solutions / by Prem Kumar Gupta and D. S. Hira. - New Delhi : S.Chand, 1993 1078p. Rs.105.00 * Graphical methods Linear programming Operation research- Mathematics * Hira, D.S * Title
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