 |
| |||
| dureté de l'eau partielle au carbonate | |||
| dureté alcaline; dureté temporaire | |||
| alkaline hardness: 3 phrases in 2 subjects |
| Chemistry | 2 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| dureté de l'eau partielle au carbonate | |||
| dureté alcaline; dureté temporaire | |||
| alkaline hardness: 3 phrases in 2 subjects |
| Chemistry | 2 |
| Natural resourses and wildlife conservation | 1 |