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دليل المستخدم
Al Ghamdi، M.، و Addis، W. (2000). The Value of Engineering Design: A Study of Perception of the Consulting Engineer's Contribution to Building and Civil Engineering Projects, and the Marketing of Consulting Services (رسالة دكتوراه غير منشورة). University of Reading، ريدنج. مسترجع من http://search.mandumah.com/Record/608214
Al Ghamdi، Muhammad، و William Addis. "The Value of Engineering Design: A Study of Perception of the Consulting Engineer's Contribution to Building and Civil Engineering Projects, and the Marketing of Consulting Services" رسالة دكتوراه. University of Reading، ريدنج، 2000. مسترجع من http://search.mandumah.com/Record/608214