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دليل المستخدم
El Naji، E. T. D. E. B. (2013). English Pronuciation problems encountered by Sudanes Secondary School Students and Teachers: With Reference to Spine book 6 and Headway intermediate. مجلة جامعة كسلا، ع3 ، 139 - 158. مسترجع من http://search.mandumah.com/Record/758833
El Naji، El Tayeb Dawa Elbeit Babikir. "English Pronuciation Problems Encountered By Sudanes Secondary School Students and Teachers: With Reference to Spine Book 6 and Headway Intermediate." مجلة جامعة كسلا ع3 (2013): 139 - 158. مسترجع من http://search.mandumah.com/Record/758833