 |
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| drainage system | |||
| collecting drain; sewerage system; sewerage-system scheme; site drainage system (eines Grundstücks); building-drainage system | |||
| system of drainage | |||
| drain system | |||
| |||
| public sewerage system | |||
| |||
| drainage systems | |||
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Entwasserungssysteme : 7 do fraz, 3 tematyki |
| Budownictwo | 4 |
| Ochrona środowiska | 2 |
| Technika i technologia | 1 |