000 00275nam a2200121Ia 4500
008 220108s9999||||xx |||||||||||||| ||und||
100 _aGalvin
245 0 _aOperating Systems Concept
260 _aSingapore
_bJhon Willy
300 _a888
650 _aComputer
942 _cBK
999 _c17863
_d17863