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Ryszard Witkowski has written 3 work(s)
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Paperback:
9788389450975 | Mushroom Model Pubns, February 20, 2010, cover price $25.00 | About this edition: One of the first attempts to relate the development of rotorcraft, both helicopters and autogiros, in Allied countries during the WWII period.
Hardcover:
9788389450852 | Mushroom Model Pubns, May 19, 2009, cover price $69.00
Paperback:
9788389450432 | Mushroom Model Pubns, April 19, 2007, cover price $28.00 | About this edition: The technical problems involved in developing practical helicopters were studied and largely solved by German designers in the late '30s, and the Luftwaffe and Kriegsmarine used rotorcraft operationally in a variety of roles during WW2.
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