00265nam a2200097Ia 4500008004100000082001500041100001600056245002600072260005900098300001000157190708s9999    xx            000 0 und d  a517.2 K527  aKhanna, M L 0aDifferential calculus  aMeerut cibty             Jai Prakash Nath & Co.c1963  ax,269