00897nam0-2200313---450-99000877191040332120090317105452.0000877191FED01000877191(Aleph)000877191FED0100087719120081203d1991----km-y0itay50------baengUSy-------001yyAeroacoustics of flight vehiclestheory and practiceEdited by Harvey H. HubbardWashingtonNASA19912 v.ill.25 cmNASA technival report90-30521.: Noise Sources2.: Noise ControlHubbard,Harvey H.504175ITUNINARICAUNIMARCBK990008771910403321D93DINPAAT 78DINPADINPAAeroacoustics of flight vehicles809966UNINA