00302nam a2200133Ia 45000030006000000080041000060400015000471000031000622450027000932500010001202600009001305460012001390050017001510STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMittal, S.C.; Sharma, J.N.  aDifferential equations  aThird  c1964  aEnglish20220125165947.0