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28 jul 1886 ano - Revuelta de Chicago (Estados Unidos)

Descrição:

Se establecen las 8 horas de trabajo

Adicionado na linha do tempo:

Revisión histórica de la salud ocupacional y la seguridad industrial

ByDaniel Obando
7 dez 2017
0
0
2504

Data:

28 jul 1886 ano
Agora
~ 139 years ago
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