/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: Accertum https://public.slidesharecdn.com/v2/images/profile-picture.png °ä´Ç²Ô²õ³Ü±ô³Ù´Ç°ùí²¹