00935nam0-22003251i-450-99000052020040332120080122111422.00-442-00990-9000052020FED01000052020(Aleph)000052020FED0100005202020020821d1992----km-y0itay50------baenga-------001yyData communications testing and troubleshootingGilbert Held2nd ed.New YorkVan Nostrand Reinholdc1992264 p.ill.23 cmSistemi di trasmissione dei datiReti di computer621.39'81Held,Gilbert27769ITUNINARICAUNIMARCBK99000052020040332110 E II 489DEE 1586DINELDINELData communications testing and troubleshooting331511UNINA