| |||
| ontginning van de zeeën | |||
|
exploitation des mers : 4 phrases in 3 subjects |
| Environment | 2 |
| Fish farming pisciculture | 1 |
| Industry | 1 |
| |||
| ontginning van de zeeën | |||
|
exploitation des mers : 4 phrases in 3 subjects |
| Environment | 2 |
| Fish farming pisciculture | 1 |
| Industry | 1 |