00281nam a2200121Ia 45000030006000000080041000060400015000471000017000622450042000792600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPiskunov, N.  aDifferential integral calculus vol II  c1974  aEnglish20220125165948.0