000 00342nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a621.381951 Y94
100 _aYUEN.C.K
245 0 _aESSENTIAL CONCEPTS OF OPERATING SYSTEM USING THE IBM FRAME EXAMPLES
260 _aSINGAPORE
_bAddison Wesley
_c1986
300 _a24X16
942 _cBK
_2DDC
999 _c20575
_d20575