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دليل المستخدم
Al Shalawi، B. (2009). An Investigation of Techniques Used in Determining the Contingency and the Factors Affecting the Contingency Techniques in a Constuction Project in Saudi Arabia (رسالة ماجستير غير منشورة). Curtin University، برث. مسترجع من http://search.mandumah.com/Record/752700
Al Shalawi، Bوer. "An Investigation of Techniques Used in Determining the Contingency and the Factors Affecting the Contingency Techniques in a Constuction Project in Saudi Arabia" رسالة ماجستير. Curtin University، برث، 2009. مسترجع من http://search.mandumah.com/Record/752700