 |
| |||
| permanent hardness; non-alkaline hardness; non-carbonate hardness | |||
| non alkaline hardness | |||
| durete permanente: 2 Phrasen in 2 Thematiken |
| Bauwesen | 1 |
| Wasserversorgung | 1 |
|
| |||
| permanent hardness; non-alkaline hardness; non-carbonate hardness | |||
| non alkaline hardness | |||
| durete permanente: 2 Phrasen in 2 Thematiken |
| Bauwesen | 1 |
| Wasserversorgung | 1 |