000 00323nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aJames L.Petreen Abraham
245 0 _aOperating System Concepts
250 _a-
260 _a-
260 _b-
260 _c0
650 _aOperating System Concepts
942 _cBK
999 _c12721
_d12721