00311nam a2200109Ia 4500008004100000041000800041082001400049100001700063245003300080250001100113260007700124231129s2007    xx            000 0 und d  aeng  a004.6/STA  aW. Stallings  aData & Computer Communcation  a8th ed  aPrentice hall of India New DelhibPrentice hall of India New Delhic2007