00389 a2200145 4500 77070 658.4032 HIL 39286 39286 Liberman S Hillier Introduction to Operations Research, 7/e Liberman S Hillier 7 Islamabad National Books Foundation xxix 1214 p Gerald J Lieberman NUST-CAE 658.4032 HIL 312143 312143 0 0 0 0 NFIC CAE CAE 2017-04-03 0 658.4032 HIL CAEN-4227 2017-04-05 2017-04-05 BK