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Environmental Project : 29 phrases in 13 subjects |
| Astronautics | 4 |
| Caspian | 2 |
| Construction | 2 |
| Ecology | 3 |
| Economics | 1 |
| Energy industry | 4 |
| Environment | 1 |
| European Bank for Reconstruction and Development | 2 |
| Law | 1 |
| Makarov | 1 |
| Sakhalin | 1 |
| Technology | 3 |
| United Nations | 4 |