7-
15
ʡ :
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http://www.nafithtech.com/index.php?option=com_content&view=article&id=122&I temid=205&lang=ar#
-9
8-
http://www.nafithtech.com/index.php?option=com_content&view=article&id=120&I temid=205&lang=ar
http://www.youtube.com/watch?v=j2x4RZ8U2Tc
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