00369nam a2200109Ia 4500008004100000082001800041100002000059245003700079260005800116630002800174650005700202211122s9999||||xx |||||||||||||| ||und||  a621.38bKEN-E  aKennedy, George 0aElectronic Communication Systems  bTata Mc Graw-Hill Publishing CompanyaNew Delhic1999  xPost Graduate Reference  aTelecommunication vTelecommunication systemsPhysics