00322nam a2200133Ia 4500008004100000041000800041082001500049100001700064245002000081250001700101260002800118300001100146650003100157231207s9999    xx            000 0 und d  aeng  a005.43/STA  aW. Stallings  aOperatig System  a2009 6th Ed.  bPearson Edu. South Asia  aPB/822  aComnputer Program Language