
Construction contract procedures (VOB) Part C: General technical specifications fin construction contracts (ATV); Waterproofing
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Construction contract procedures (VOB) Part C: General technical specifications fin construction contracts (ATV); Waterproofing
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频