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04:42 GMT +3 hours19 December 2014
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Ilya Muromets: World’s First Heavy Bomber

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

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