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20 marzo 1922 anni - JORNADA LABORAL DE 8 HS.

Descrizione:

La Conferencia Internacional de la Organización Internacional del Trabajo establece la jornada laboral de 8 hs. en todo el mundo

Aggiunto al nastro di tempo:

TP Evolucion historica del trabajo

8 nov 2018

0

0

630

Data:

20 marzo 1922 anni

Adesso

~ 103 years ago

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