Building Materials Prices; Construction Contract; Legal Ground.
建材价格；施工合同；法律依据。
The system of legal activity ground defect was accepted in German Civil Code in 2002.
法律行为基础瑕疵制度2002年被纳入《德国民法典》。
The system of legal activity ground defect was accepted in German Civil Code in 2002.
法律行为基础瑕疵制度2002年被纳入《德国民法典》。
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