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http://kam.elg.ifrance.com/nouvellepage20.htm
http://lafryhi02.wordpress.com/
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college-ennakhil.com/exam_mihani/namadij_mihani.pdf
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http://www.khayma.com/machreq/exam_math_2006.htmhttp://www.google.co.ma/search?hl=fr&ei=PKmpTMrxM4maOvvcwbUM&q=%D8%A7%D9%84%D8%AA%D8%B9%D9%84%D9%85%D8%A7%D8%AA+%D8%A7%D9%84%D9%85%D8%B3%D8%AA%D9%87%D8%AF%D9%81%D8%A9+-%D8%A7%D9%84%D8%A7%D9%85%D8%AA%D8%AF%D8%A7%D8%AF%D8%AA&start=60&sa=