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american journal Free Articles

Unmanned Helicopters

Authors: FIT Petrescu and RVV Petrescu

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NACA and NASA, Part III

Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu

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Military aviation, Part II

Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu

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Project HARP

Authors: FIT Petrescu and RVV Petrescu

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Aviation History, Part II

Authors: Relly Victoria V. Petrescu and Florian Ion T. Petrescu

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NACA and NASA, Part X

Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu

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What is a UFO?

Authors: Florian Ion Tiberiu Petrescu and Relly Victoria V. Petrescu

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NACA and NASA, Part I

Authors: Relly Victoria Virgil Petrescu and Florian Ion Tiberiu Petrescu

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China Part I

Authors: FIT Petrescu and RVV Petrescu

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Aviation History, Part I

Authors: Relly Victoria V. Petrescu and Florian Ion T. Petrescu

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V Engines Design

Authors: Florian Ion T. Petrescu and Relly Victoria V. Petrescu

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