00314nam a2200133Ia 45000030006000000080041000060400015000471000024000622450045000862500011001312600009001425460012001510050017001630STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBetz Herman; Others  aDifferential equations with applications  aSecond  c1964  aEnglish20220125165944.0