00285nam a22000977a 4500008004100000020001900041082001700060100002600077245002500103260005900128260507b        |||||||| |||| 00| 0 eng d  a978-8195131983  a658.4034 OBE  aOberoi Sarbjit Singh   aOperations Research.  aNew DelhibSYBGEN Learning India Private Limitedc2022