The awful logic of land mines -- and an app that helps people avoid them | Carlos Bautista TED 6:04 6 years ago 57 496 Скачать Далее
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HOW A LAND MINE WORKS?.|| Anti-tank mines and Anti-personnel mines |learn from the base|| Learn from the base 3:07 3 years ago 5 940 844 Скачать Далее
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