| |||
| transformation des déchets | |||
|
refuse processing : 5 phrases in 2 subjects |
| Environment | 4 |
| Natural resourses and wildlife conservation | 1 |
| |||
| transformation des déchets | |||
|
refuse processing : 5 phrases in 2 subjects |
| Environment | 4 |
| Natural resourses and wildlife conservation | 1 |