00290nam a2200109Ia 4500008004100000082001500041100001900056245003900075250001200114260004600126300000800172190710s9999    xx            000 0 und d  a317.2 G65T  aPrasad, Gorakh 0aText book on differential calculus  a12th ed  aAllahabadbPothishala Private Limitc1986  a355