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28 mars 1949 - Se propone el estudio de la ergonomía (Estados Unidos)
Ajouté au bande de temps:
Revisión histórica de la salud ocupacional y la seguridad industrial
By
Daniel Obando
7 déc. 2017
0
0
2504
Date:
28 mars 1949
Maintenaint
~ Il y a 76 ans
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