 |
| |||
| permanent hardness; non-alkaline hardness; non-carbonate hardness | |||
| non alkaline hardness | |||
| dureté permanente: 2 phrases in 2 subjects |
| Construction | 1 |
| Water supply | 1 |
|
| |||
| permanent hardness; non-alkaline hardness; non-carbonate hardness | |||
| non alkaline hardness | |||
| dureté permanente: 2 phrases in 2 subjects |
| Construction | 1 |
| Water supply | 1 |