000 00304nam a2200121Ia 4500
008 220201s1997 xx 000 0 eng d
082 _a621.38215
_bKEN
100 _aKennedy,George
245 0 _aElectronic communication system
260 _aDelhi
_bTata Mcgraw hill
_c1997
300 _a741
942 _2ddc
999 _c35122
_d35122