000			00354nam a2200169Ia 4500
100			_aCouch, Leon W
080			_a621.38
526			_dNTB
526			_aUG
366			_f20%
250			_a8th ed.
942			_cBK
245			_aDigital and analog communication systems. 8th ed
260			_aPearson _bNew Delhi _c2014
300			_a676
546			_aE
999			_c53885 _d53885