000 00290nam a2200121Ia 4500
008 190107s9999 xx 000 0 und d
020 _a9788178085036
100 _awilliam stallings
245 0 _aOperating systems 4th edition
260 _bPHI
300 _bTransferred from NPS
942 _cBK
999 _c109
_d109