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دليل المستخدم
Al Shamrani، D. A.، و Clarke، P. (2011). Value Engineering as an Effective Improvement Methodology in the Management of Operational and Maintenance Processes in Saudi Arabia (رسالة دكتوراه غير منشورة). Nottingham Trent University، نوتنغهام. مسترجع من http://search.mandumah.com/Record/600259
Al Shamrani، Daif Allah، و Phil Clarke. "Value Engineering As an Effective Improvement Methodology in the Management of Operational and Maintenance Processes in Saudi Arabia" رسالة دكتوراه. Nottingham Trent University، نوتنغهام، 2011. مسترجع من http://search.mandumah.com/Record/600259