 |
| |||
| pollution from land-based sources | |||
| land-based pollution | |||
| contaminación de origen terrestre: 6 phrases in 3 subjects |
| Environment | 2 |
| Transport | 3 |
| United Nations | 1 |
|
| |||
| pollution from land-based sources | |||
| land-based pollution | |||
| contaminación de origen terrestre: 6 phrases in 3 subjects |
| Environment | 2 |
| Transport | 3 |
| United Nations | 1 |