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9 Jan 1867 Jahr - Se crea una ley que nombra inspectores de fábricas (Estados Unidos)
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:
9 Jan 1867 Jahr
Jetzt
~ 158 years ago
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