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Helicopter Principles Of Flight
Phil Croucher
出版Lulu.com, 2011-11-27
主題Reference / General
ISBN09780269699780978026967
URLhttp://books.google.com.hk/books?id=doIYAgAAQBAJ&hl=&source=gbs_api
EBookSAMPLE
註釋How the helicopter flies! In plain English (as far as possible!)