000			00325nam a2200133Ia 4500
100			_aDennis, Roddy & John, Coolen
020			_a0-87692-396-1
250			_a3rd ed
942			_cBK
245			_aElectrocnic communications
260			_aPrentice Hall of india, New Delhi _c1987
082			_a621.38 Rod/Coo
300			_axii788
999			_c15761 _d15761