 |
| |||
| contaminación por nitratos procedentes de fuentes difusas | |||
|
pollution caused by nitrates from diffuse sources : 2 phrases, 1 sujets |
| Environnement | 2 |
|
| |||
| contaminación por nitratos procedentes de fuentes difusas | |||
|
pollution caused by nitrates from diffuse sources : 2 phrases, 1 sujets |
| Environnement | 2 |