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9 gen 1867 anni - Se crea una ley que nombra inspectores de fábricas (Estados Unidos)

Aggiunto al nastro di tempo:

Revisión histórica de la salud ocupacional y la seguridad industrial

ByDaniel Obando

7 dic 2017

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9 gen 1867 anni

Adesso

~ 158 years ago

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