00311nam a2200133Ia 45000030006000000080041000060400015000471000015000622450051000772500011001282600009001395460012001480050017001600STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aInce, E.L.  aIntegration of ordinary differential equations  aFourth  c1949  aEnglish20220125165949.0