00773nam0-2200289---450-99000876772040332120081210143438.0000876772FED01000876772(Aleph)000876772FED0100087677220081128d1955----km-y0itay50------baengGBy-------001yyPrinciples of helicopter engineeringJacob ShapiroLondonTemple press1955XIV, 433 p.ill25 cmShapiro,Jacob313534ITUNINARICAUNIMARCBK990008767720403321H15DINPAC2DINPADINPAPrinciples of helicopter engineering810888UNINA