 |
| effluents disposal: 15 phrases in 10 subjects |
| Construction | 1 |
| Ecology | 2 |
| Electronics | 3 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 1 |
| Sakhalin | 1 |
| Technology | 3 |
| Water supply | 1 |
| Well control | 1 |
|
| effluents disposal: 15 phrases in 10 subjects |
| Construction | 1 |
| Ecology | 2 |
| Electronics | 3 |
| Energy industry | 1 |
| General | 1 |
| Makarov | 1 |
| Sakhalin | 1 |
| Technology | 3 |
| Water supply | 1 |
| Well control | 1 |