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The Hughes XH-17 flying crane
PROUTY Raymond W. | 2005
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Helicopter projects at GE's Schenectady flight test center
STORY Roger W. | 2003
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XH-17 : le plus grand hélicoptère du monde
BANGS Scholer | 1951
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Howard Hughes' Top Ten : the tycoon owned dozens of aircraft but held only a handful near and dear
LERNER Preston | 2004