4714898
9780295972039
"Vertical Challenge" chronicles the most innovative and least remembered of the helicopter industry's pioneering companies. Founded by Stanley Hiller, Jr., Hiller Aircraft produced conventional and ramjet helicopters, flying platforms, and other fascinating flying machines. (Transportation)Spenser, Jay P. is the author of 'Vertical Challenge: The Hiller Aircraft Story' with ISBN 9780295972039 and ISBN 0295972033.
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