00317nam a2200145Ia 4500 Singh/J.P/ Singh/N.P BK 20 operations research Operation Research Ane Books 2014 658.4034 SIN ENGLISH Info.Tech 35518 35518 0 0 0 0 CRC CRCE CRCE 2023-03-17 Book Service Syndicate 316.00 58 dt 11.06.2014 0 658.4034 SIN 23224 2023-03-17 395.00 0000-00-00 BK