 |
| |||
| poussière respirable; poussière colloïdale | |||
| respirable dust: 8 phrases in 4 subjects |
| Coal | 3 |
| Environment | 2 |
| Health care | 2 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| poussière respirable; poussière colloïdale | |||
| respirable dust: 8 phrases in 4 subjects |
| Coal | 3 |
| Environment | 2 |
| Health care | 2 |
| Natural resourses and wildlife conservation | 1 |