00342nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001900084245003700103250000800140260002500148300000900173650001400182221030s9999    xx            000 0 und d  a0070634149  aEnglish  a105.23bFor  aB. A. Forouzan 0aData Communications & Networking  a4th  bTMHaNew Delhic2006  a1134  aComputers