Carlson, Bruce A. Communication systems : an introduction to signals and noise in electrical communication / Bruce A. Carlson - 3a. ed. - New York : McGraw-Hill, c1986 - 684 p.; 21 cm. Es fotocopia ISBN: 007009960X Subjects--Topical Terms: COMUNICACION ELECTRICACOMUNICACION--SISTEMASSEŅALES Universal Decimal Class. No.: 621.391