 |
| |||
| lutte contre la pollution; mesures anti-pollution | |||
| |||
| activités de lutte; mesure de lutte | |||
| мероприятие борьбы с загрязнением: 3 phrases in 2 subjects |
| Chemistry | 1 |
| Natural resourses and wildlife conservation | 2 |
|
| |||
| lutte contre la pollution; mesures anti-pollution | |||
| |||
| activités de lutte; mesure de lutte | |||
| мероприятие борьбы с загрязнением: 3 phrases in 2 subjects |
| Chemistry | 1 |
| Natural resourses and wildlife conservation | 2 |