00492nam a2200169Ia 4500 230714s9999 xx 000 0 und d 9790000000000 eng 658.4'034 GUP Gupta P.K. 110418 Problems In Operations Research Principles And Solutions 2013 S. Chand 1201 Rs. 540.00 Gupta P.K. & Hira D.S. 116893 O:0412310-Sep-2014B:IN 99311-Aug-2014 MECH 432 213728 213728