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20 März 1922 Jahr - JORNADA LABORAL DE 8 HS.

Beschreibung:

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

Zugefügt zum Band der Zeit:

TP Evolucion historica del trabajo

ByFranchu
8 Nov 2018
0
0
632

Datum:

20 März 1922 Jahr
Jetzt
~ 103 years ago
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