00279nam a2200121Ia 45000030006000000080041000060400015000471000023000622450034000852600009001195460012001280050017001400STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPrabir Chakravarty  aFoundation of computer system  c1994  aEnglish20220125170200.0