00297nam a2200121Ia 4500008004100000041000800041082001500049100001900064245002200083250000800105260005400113300000800167231228s2006    xx            000 0 und d  aeng  a004.6bBLA  aBLACK (Uyless)  aComputer Networks  a2nd  aNew DelhibPrentice Hall of India New Delhic2006  a430