00250nam a2200109Ia 4500008004100000082001500041100001600056245001500072250000900087260003600096300000800132240913s9999||||xx |||||||||||||| ||und||  a510  AGG/A  aRS Aggarwal 0aArithmetic  aNULL  bS Chand and CoaNew Delhic2012  a549