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109650 |
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20250704193757.0 |
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080708s1967 fr g 000 0 fra d |
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|a Organización de las Naciones Unidas para la educación, la ciencia y la cultura (UNESCO)
|9 5107
|
| 245 |
1 |
0 |
|a Tendances nouvelles de lenseignement des mathématiques
|
| 260 |
|
|
|a París :
|b UNESCO,
|c 1967.
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| 300 |
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|a 1 v. ;
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| 500 |
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|a Portada y texto en inglés y francés
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