000			00338nam a2200133Ia 4500
005			20260329235131.0
008			260329s9999||||xx |||||||||||||| ||und||
082			_a621.38 K38E
100			_aDavis,Kennedy
245		0	_aElectronic communication system
250			_a4th
260			_aNew Delhi _bTata Mcgraw Hill Co. _c1993
942			_cBK
999			_c277975 _d277975