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| rubi | |||
| Anglais glossaire | |||
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| Name in Latin, Rubeus Red, Corundum group, aluminum oxide. | |||
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| Ringing Up about Breastfeeding (bigmaxus) | |||
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Ruby : 15 phrases, 4 sujets |
| Chimie | 2 |
| Électronique | 1 |
| Industrie | 10 |
| Ressources naturelles et conservation de la faune | 2 |