00257nam a2200109Ia 4500008004100000082001300041100001900054245002600073250000800099260003200107300000800139191201s2014    xx            000 0 und d  a510bNAD  aNARAYAN,Shanti 0aDifferential Calculus  aRep  c2014bS.Chand&CoaNEW DELHI  a572