Chetverikov ARK-4 explained

The ARK-4 was a single-engine Soviet flying boat design produced by Chyetverikov.[1]

See also

Notes and References

  1. Book: Murphy . Justin D. . McNiece . Matthew A. . 2009 . Military Aircraft, 1919-1945: An Illustrated History of Their Impact . . 231 . 9781851094981.

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