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| natron (оксид натрия не может сущестовать как минерал. Природная сода - карбонат натрия Ignoila) | |||
| sodium oxide; sodium monoxide | |||
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окись натрия : 3 phrases in 3 subjects |
| Construction | 1 |
| Polymers | 1 |
| Weapons of mass destruction | 1 |
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