
Drainage Systems On Private Ground - Design Of Sizes Of Drain, Waste And Ventilation Pipelines - Examples Of Calculation
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Drainage Systems On Private Ground - Design Of Sizes Of Drain, Waste And Ventilation Pipelines - Examples Of Calculation
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频