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jul 28, 1886 - Revuelta de Chicago (Estados Unidos)
Description:
Se establecen las 8 horas de trabajo
Added to timeline:
Revisión histórica de la salud ocupacional y la seguridad industrial
By
Daniel Obando
7 Dec 2017
0
0
2504
Date:
jul 28, 1886
Now
~ 139 years ago
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