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100   $a20020821d--------km-y0itay50------ba
101 0 $aeng
105   $ay-------001yy
200 1 $aCommunication systems$ean introduction to signals and noise in electrical communication$fA. Bruce Carlson
205   $a2nd ed.
210   $aNew York$cMcGraw-Hill$d[1975]
215   $a495 p.$cill.$d24 cm
610 0 $aSistemi di comunicazione
676   $a621.38'04
700  1$aCarlson,$bBruce A.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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952   $a10 E II 279$bL/14 CNR$fDINEL
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