/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: DrNamCoke https://cdn.slidesharecdn.com/profile-photo-DrNamCoke-48x48.jpg?cb=1523565659 ผมยอมไม่ได้ ถ้าไม่ยอมพยายาม