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3 agos 1877 anni - Se ordena colocar resguardos a las máquinas (Alemania)

Aggiunto al nastro di tempo:

Revisión histórica de la salud ocupacional y la seguridad industrial

ByDaniel Obando

7 dic 2017

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3 agos 1877 anni

Adesso

~ 148 years ago

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