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lunes, 13 de abril de 2015
101 artefactos tecnológicos que cambiaron al mundo
https://www.youtube.com/watch?v=3z_B8U8lcvM
https://www.youtube.com/watch?v=TCGrQYPMIdI
https://www.youtube.com/watch?v=H9a4LxQ5j7A
https://www.youtube.com/watch?v=_5myxPqYoYk
https://www.youtube.com/watch?v=6t2LjLM5pUc
https://www.youtube.com/watch?v=gPVHvW2V25c
https://www....
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