/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: yootsang https://cdn.slidesharecdn.com/profile-photo-yootsang-48x48.jpg?cb=1523675976 à¸È¨¹ˆà¸²à¸£à¸±à¸�