00300nam a2200121Ia 45000030006000000080041000060400015000471000016000622450062000782600009001405460012001490050017001610STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHyres Frank  aTheory and problems of differential and integral calculus  c1950  aEnglish20220125165943.0