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| фоновое загрязнение атмосферы | |||
| air background pollution: 13 phrases in 10 subjects |
| Astronautics | 1 |
| Ecology | 3 |
| Energy industry | 1 |
| Makarov | 1 |
| Meteorology | 2 |
| Natural resourses and wildlife conservation | 1 |
| Sakhalin R | 1 |
| Technology | 1 |
| United Nations | 1 |
| Weapons of mass destruction | 1 |