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| carbon compounds | |||
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| соединения углерода: 24 phrases in 13 subjects |
| Biotechnology | 1 |
| Caspian | 3 |
| Construction | 1 |
| Ecology | 2 |
| Economy | 1 |
| Energy industry | 4 |
| Firefighting and fire-control systems | 1 |
| General | 1 |
| Makarov | 5 |
| Medical | 1 |
| Oil and gas | 1 |
| Refrigeration | 1 |
| Technology | 2 |