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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
By
Daniel Obando
7 Dez 2017
0
0
2504
Datum:
28 Jul 1886 Jahr
Jetzt
~ 139 years ago
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