/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: sirikulpoonnark https://cdn.slidesharecdn.com/profile-photo-sirikulpoonnark-48x48.jpg?cb=1523606019 ป.โทWestern Michigan University ป.ตรีChulalongkorn University