000			00362nam a2200133Ia 4500
100			_aCarlson, A Bruce
020			_a0-07-009960-X
250			_a3rd ed
942			_cBK
245			_aCommunication systems _ban introduction to signals and noise in electrical communication
260			_aMcGraw - Hill, New York _c1986
082			_a621.38 Car
300			_axvii,686
999			_c30007 _d30007