00261nam a2200109Ia 4500008004100000082001500041100001600056245002000072250000800092260004300100300000800143190710s9999    xx            000 0 und d  a517.21 SH2  aSharma, J N 0aInfinite series  a2nd  aMeerutbKrishna prakashan mandirc1965  a306