
Construction contract procedures (VOB) C: General technical specifications in construction contracts (ATV); Sheet metal roofing and wall covering work
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Construction contract procedures (VOB) C: General technical specifications in construction contracts (ATV); Sheet metal roofing and wall covering work
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频