00743nam0-22002891i-450-99000048258040332120071217165604.00-7273-0401-1000048258FED01000048258(Aleph)000048258FED0100004825820020821d1975----km-y0itay50------baenga-------001yyDelta modulation systemsR. SteeleLondonPentech Pressc1975379 p.ill.21 cmModulazione delta621.38Steele,RaymondITUNINARICAUNIMARCBK99000048258040332110 E II 2979902DINELDINELUNINA