00375nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001200084245006800096260002900164300000800193650001600201700001200217221030s9999    xx            000 0 und d  a817656186X  aEnglish  a105.23bJai  aM. Jain 0aData Communication & Networking Essentialscby M. Jain, S. Jain  bBPB PubaNew Delhic2000  a397  aBE Computer  aS. Jain