/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: fison123yoyo https://public.slidesharecdn.com/v2/images/profile-picture.png ฉัà¸È¨¹€à¸›à¹‡à¸È¨¸œà¸¹à¹‰à¸Šà¸²à¸¢