/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssuserad2946 https://cdn.slidesharecdn.com/profile-photo-ssuserad2946-48x48.jpg?cb=1523641976 ึϸµà¸Šà¸±à¹ˆà¸§à¸­à¸¢à¸¹à¹ˆà¸—ี่ตัวทำ