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دليل المستخدم
Al Ruwashid، M. S. A. A.، و Olson، K. V. (1984). THE EFFECTS OF A LECTURE-ONLY AND LECTURE-LABORATORY APPROACH ON RIYADH JUNIOR COLLEGE, SAUDI ARABIA CHEMISTRY STUDENTS' ACHIEVEMENT AND ATTITUDES (رسالة دكتوراه غير منشورة). University of Northern Colorado، قريلي. مسترجع من http://search.mandumah.com/Record/612500
Al Ruwashid، Mohammed Suliman Abd Alrahman، و Kenneth V. Olson. "THE EFFECTS OF A LECTURE-ONLY AND LECTURE-LABORATORY APPROACH ON RIYADH JUNIOR COLLEGE, SAUDI ARABIA CHEMISTRY STUDENTS' ACHIEVEMENT AND ATTITUDES" رسالة دكتوراه. University of Northern Colorado، قريلي، 1984. مسترجع من http://search.mandumah.com/Record/612500