| |||
| desperdicio de la clasificación | |||
|
sorting waste : 10 phrases in 3 subjects |
| Earth sciences | 1 |
| Environment | 8 |
| Nuclear and fusion power | 1 |
| |||
| desperdicio de la clasificación | |||
|
sorting waste : 10 phrases in 3 subjects |
| Earth sciences | 1 |
| Environment | 8 |
| Nuclear and fusion power | 1 |