 |
| sewage treatment: 153 phrases in 36 subjects |
| Astronautics | 2 |
| Caspian | 3 |
| Construction | 21 |
| Drilling | 2 |
| Ecology | 20 |
| Economy | 1 |
| Electrical engineering | 1 |
| Electronics | 3 |
| Energy industry | 1 |
| Environment | 1 |
| Forestry | 1 |
| General | 4 |
| Hydraulic engineering | 2 |
| Industry | 1 |
| Karachaganak | 3 |
| Makarov | 16 |
| Medical | 2 |
| Metallurgy | 1 |
| Military | 1 |
| Molikpaq | 5 |
| Natural resourses and wildlife conservation | 8 |
| Nautical | 2 |
| Nuclear physics | 1 |
| Oil / petroleum | 5 |
| Oil and gas | 3 |
| Oil and gas technology | 3 |
| Oilfields | 1 |
| Production | 1 |
| Real estate | 1 |
| Sakhalin | 15 |
| Sakhalin R | 7 |
| Sociology | 2 |
| Technology | 9 |
| Tengiz | 1 |
| Water resources | 1 |
| Water supply | 2 |