000 00265nam a2200121Ia 4500
020 _a0074621823
100 _aGEORGE KENNEDY
245 _aELECTRONIC COMMUNICATION SYSTEMS
250 _a3
260 _c1985
_bMC GRAW HILL
_aNew delhi
300 _a741
942 _cBK
999 _c15863
_d15863