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| environmental research | |||
| environmental study | |||
| environmental survey | |||
| исследование окружающей среды: 143 phrases in 30 subjects |
| Antarctic | 1 |
| Astronautics | 13 |
| British usage, not spelling | 1 |
| Caspian | 2 |
| Ecology | 23 |
| Economy | 1 |
| Electronics | 2 |
| Energy industry | 26 |
| Environment | 1 |
| Fish farming pisciculture | 3 |
| General | 9 |
| Geophysics | 3 |
| Law | 1 |
| Makarov | 5 |
| Medical | 1 |
| Meteorology | 1 |
| Military | 21 |
| Mining | 1 |
| Nanotechnology | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 3 |
| Navigation | 1 |
| Occupational health & safety | 1 |
| Refrigeration | 1 |
| Sakhalin | 4 |
| Scientific | 2 |
| Technology | 4 |
| United Nations | 6 |
| Water supply | 3 |
| Weapons of mass destruction | 1 |