
German construction contract procedures (VOB) Part A: General provisions relating to the award of construction contracts
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
German construction contract procedures (VOB) Part A: General provisions relating to the award of construction contracts
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻