00889nam0-22003371i-450-99000045324040332120100408101120.0000045324FED01000045324(Aleph)000045324FED0100004532420020821d1972----km-y0itay50------baenga-------001yyFeedback systemsJose B. CruzNew York [etc.]McGraw-Hillc1972324 p.ill.23 cmInter-University electronics series14Sistemi retroazionatiElettronica generale537.5629.83Cruz,José B.ITUNINARICAUNIMARCBK99000045324040332110 D III 1657721DINEL31-16817524FI1DINELFI1UNINA