/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: smstom https://public.slidesharecdn.com/v2/images/profile-picture.png à¸È¨¹ˆà¸²à¹€à¸šà¸·à¹ˆà¸­