/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: wirinyapimla https://cdn.slidesharecdn.com/profile-photo-wirinyapimla-48x48.jpg?cb=1523424943 จบ ป.ตรี คณิตศาสตร์