00282nam a2200121Ia 45000030006000000080041000060400015000471000016000622450031000782600022001095460012001310050017001430STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aByers, T.J.  aIBM PS/2 a reference guide  bMcgraw hillc1989  aEnglish20220125170154.0