00610nam a2200205 a 4500 20181210012932.0 180416m20011991ii a|||| |||| 00| 0 eng d 8121909686. BD-DhBPA BD-DhBPA 658.5076 GUP 2001 Gupta, P. K. 82428 Problems in operations research : principles and solutions / P. K. Gupta and D.S.Hira 1st. ed. New Delhi : S. Chand, 2001 1078p.; 22 cm. mizan Operations research 82429 Hira,D.S. 82430 ddc BK 28967 28967 0 ddc 0 0 BPATC BPATC GRR 2018-04-16 0 658.5076 GUP 2001 89340 2018-04-16 00:00:00 2018-04-16 BK mizan