01112nam--2200385---450-99000303646020331620071219114330.091-44-00214-9000303646USA01000303646(ALEPH)000303646USA0100030364620071219d1998----km-y0itay50------baengSW||||||||001yyUnderstanding telecommunications 2Erisson, TeliaLundEricsson1998677 p.24 cmTelecomunicazioni621.382EriccsonTeliaITsalbcISBD990003036460203316621.382 TEL20465 Tec.621.3820065779621.382 TEL20465 Tec.621.38200065784621.382 TEL20465 Tec.621.38200065788BKTECCHIARA9020071219USA011125CHIARA9020071219USA011134CHIARA9020071219USA011143Understanding telecommunications 21026255UNISA