00291nam a2200133Ia 45000030006000000080041000060400015000471000019000622450027000812500011001082600009001195460012001280050017001400STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBhu Dev Sharma  aDifferential equations  aSecond  c1965  aEnglish20220125165946.0