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05:08 GMT +3 hours28 February 2015
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Ilya Muromets: World’s First Heavy Bomber

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Ilya Muromets: World’s First Heavy Bomber
© Sputnik
Four-engine, all-wood Sikorsky biplanes were manufactured in 1913-1918

Four-engine, all-wood Sikorsky biplanes were manufactured in 1913-1918