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- Author
- Robin MORET
- Created on
- Sunday 25 July 2010
- Posted on
- Sunday 13 January 2019
- Dimensions
- 2880*1920
- Tags
- aviation, Chantilly, helicopter, Hoverfly, NASM, National Air & Space Museum, proto, prototype, R-4, S-47, Sikorsky, Smithsonian, Udvar Hazy Center, Udvar-Hazy Center, USA, Virginia, XR-4C
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- 989
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