000 00329nam a2200133Ia 4500
008 220201s1985 xx 000 0 eng d
082 _a621.382
_bKEN
100 _aKemmedy, George
245 0 _aElectronic communications systems
250 _a3
260 _bNew Delhi : Tata Mc Graw hill
_c1985
300 _a741
942 _2ddc
999 _c85220
_d85220