 |
| bassin versant: 18 phrases in 6 subjects |
| Economy | 1 |
| Environment | 1 |
| Forestry | 3 |
| Geography | 3 |
| Name of organization | 1 |
| Water resources | 9 |
|
| bassin versant: 18 phrases in 6 subjects |
| Economy | 1 |
| Environment | 1 |
| Forestry | 3 |
| Geography | 3 |
| Name of organization | 1 |
| Water resources | 9 |