00338nam a2200109Ia 4500008004100000082001500041100001400056245003100070260002600101630001800127650008300145211109s9999||||xx |||||||||||||| ||und||  a004bBYE-I  aByers, Tj 0aIbm Ps/2 a Reference Guide  bMc Graw HillaNewyork  xGENERAL STACK  aComputer Science nformation & General WorkvData processing & computer science