00992nam0-22003251i-450-99000048357040332120081127094653.00-07-009957-X000048357FED01000048357(Aleph)000048357FED0100004835720020821d1981----km-y0itay50------baenga-------001yyCommunication systemsan introduction to signals and noise in electrical communicationA. Bruce Carlson2nd ed.International student editionAuckland ...[etc.]McGraw-Hill international book©1981495 p.ill.21 cmMcGraw-Hill electrical and electronic engineering seriesTelecomunicazioni621.382Carlson,Bruce A.ITUNINARICAUNIMARCBK99000048357040332110 E II 393124 DISDINELDINELUNINA