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|a Oficina Internacional del Trabajo
|9 48723
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| 245 |
1 |
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|a Les aspects sociaux de la rationalisation: études préliminares
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| 260 |
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|a Genève,
|c 1931.
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|a 415 p. ;
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|a Études et documents. Serie B ;
|v 18
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|c 34
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|z a
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