00291nam a2200121Ia 45000030006000000080041000060400015000471000021000622450035000832600022001185460012001400050017001520STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aScott Norman, R.  aElectronic computer technology  bMcgraw hillc1970  aEnglish20220125170156.0