 |
| public water supply: 21 phrases in 9 subjects |
| Construction | 3 |
| Ecology | 6 |
| Energy industry | 1 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Production | 1 |
| Technology | 4 |
| Water resources | 1 |
| Water supply | 3 |
|
| public water supply: 21 phrases in 9 subjects |
| Construction | 3 |
| Ecology | 6 |
| Energy industry | 1 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Production | 1 |
| Technology | 4 |
| Water resources | 1 |
| Water supply | 3 |