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5 gen 1890 anni - Se generaliza la legislación que protege la sociedad y a los trabajadores contra riesgos laborales (mundialmente)

Aggiunto al nastro di tempo:

Revisión histórica de la salud ocupacional y la seguridad industrial

ByDaniel Obando

7 dic 2017

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5 gen 1890 anni

Adesso

~ 135 years ago

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