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28 Jul 1886 Jahr - Revuelta de Chicago (Estados Unidos)

Beschreibung:

Se establecen las 8 horas de trabajo

Zugefügt zum Band der Zeit:

Revisión histórica de la salud ocupacional y la seguridad industrial

ByDaniel Obando
7 Dez 2017
0
0
2653

Datum:

28 Jul 1886 Jahr
Jetzt
~ 139 years ago
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