
Contract Procedure For Building Works - Part C: General Technical Specifications For Building Works - Damp-proofing Against Non-pressurized Water
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Contract Procedure For Building Works - Part C: General Technical Specifications For Building Works - Damp-proofing Against Non-pressurized Water
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频