/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssuser2bd7d3 https://cdn.slidesharecdn.com/profile-photo-ssuser2bd7d3-48x48.jpg?cb=1524016337 มุ่งมั่น ตั้งใจ