/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: boubakerba https://public.slidesharecdn.com/v2/images/profile-picture.png ³¦Ã©±ô¾±²ú²¹³Ù²¹¾±°ù±ð