00290nam a2200121Ia 45000030006000000080041000060400015000471000022000622450033000842600022001175460012001390050017001510STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLynch William, A.  aIntroductory system analysis  bMcgraw hillc1961  aEnglish20220125170022.0