00824nam0-22002891i-450-99000048429040332120100223095950.0000048429FED01000048429(Aleph)000048429FED0100004842920020821d--------km-y0itay50------baengy-------001yyCommunication systemsan introduction to signals and noise in electrical communicationA. Bruce Carlson2nd ed.New YorkMcGraw-Hill[1975]495 p.ill.24 cmSistemi di comunicazione621.38'04Carlson,Bruce A.ITUNINARICAUNIMARCBK99000048429040332110 E II 279L/14 CNRDINELDINELUNINA