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You are here: Home > Science > Technology > Machines > Aircraft > Helicopters
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Helicopter History Site
[ Kids/Teens/Mature Teens ] - The Helicopter History site traces the evolution of rotary wing aircraft back to Leonardo Da Vinci.
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History of the Helicopter
[ Kids/Teens/Mature Teens ] - Provides a complete history of helicopter evolution up to current day. By a student at Arkansas School for Mathematics and Sciences.
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