00311nam a2200133Ia 45000030006000000080041000060400015000471000023000622450043000852500011001282600009001395460012001480050017001600STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRainville Earl, D.  aShort course in differential equations  aFourth  c1973  aEnglish20220125165945.0