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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1960 año - La OIT y la OMS realizan sus primeros pasos en la ergonomía
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By
Jhon Barcasnegras
5 oct 2017
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fecha:
1 ene 1960 año
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~ 65 years ago
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