00323nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001600084245004000100260002500140300000800165650001600173221030s9999    xx            000 0 und d  a8120311183  aEnglish  a105.23bGup  aP. C. Gupta 0aData Communicationscby P. C. Gupta  bPHIaNew Delhic2001  a475  aBE Computer