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| environmental research (Post Scriptum) | |||
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| research into environmental protection | |||
| исследования в области окружающей среды: 33 phrases in 12 subjects |
| Astronautics | 1 |
| Ecology | 6 |
| Energy industry | 6 |
| Fish farming pisciculture | 3 |
| General | 2 |
| Law | 1 |
| Makarov | 3 |
| Sakhalin | 2 |
| Scientific | 2 |
| Technology | 1 |
| United Nations | 4 |
| Water supply | 2 |