
German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) - Trenchless pipelaying
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
German construction contract procedures (VOB) Part C: General technical specifications in construction contracts (ATV) - Trenchless pipelaying
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频