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| rubi | |||
| English thesaurus | |||
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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 in 4 subjects |
| Chemistry | 2 |
| Electronics | 1 |
| Industry | 10 |
| Natural resourses and wildlife conservation | 2 |