00294nam a2200121Ia 45000030006000000080041000060400015000471000019000622450037000812600025001185460012001430050017001550STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKaplan Wilfred  aElements Differentials Equations  bAddison Wesleyc1964  aEnglish20220125165947.0