00506nam a2200157Ia 4500008004100000100003400041245002500075250000600100260002100106260000900127300000800136650004000144942001000184952013900194999001500333221231s9999    xx            000 0 und d  aSingh R P and Sapre S D95547 0aCommunication System  a2  bTata McGraw-Hill  c2007  a581  aElectronics and Communication95548  cBE_BK  00104070aAITbAITd2015-06-24eMega Booksg270.00l0pBE11587r2022-12-31v270.00w2022-12-31yBE_BKzTelecommunicationB1900-01-01  c4079d4079