00718nam0-22002771i-450-990000023410403321000002341FED01000002341(Aleph)000002341FED0100000234120011111d--------km-y0itay50------baitay-------001yyRadio electronicsSamuel Seely.New YorkMcGraw-Hill book company1956VII, 487 p.ill.21 cmRadioelettronica621.381Seely,SamuelITUNINARICAUNIMARCBK99000002341040332113 B 61 0625432FINBCFINBCUNINAING01