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دليل المستخدم
Al Mulla، A. (1993). The Effects of Demographic Difference on Value System and Perceived school Climate in Qatar Elementary Public Schools. مجلة مركز البحوث التربوية، س2, ع3 ، 7 - 33. مسترجع من http://search.mandumah.com/Record/680342
Al Mulla، Amal. "The Effects of Demographic Difference On Value System and Perceived School Climate in Qatar Elementary Public Schools." مجلة مركز البحوث التربوية س2, ع3 (1993): 7 - 33. مسترجع من http://search.mandumah.com/Record/680342