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| lethal dose ld50 (летальная доза химического вещества, вызывающая гибель 50% животных при введении в организм) | |||
| летальная доза ld50: 7 phrases in 5 subjects |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Mathematics | 3 |
| Medical | 1 |
| Toxicology | 1 |
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