/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: tungphd https://cdn.slidesharecdn.com/profile-photo-tungphd-48x48.jpg?cb=1713312209 Full name: Phan Duy Tùng Cellphone: +84986018280 Email: duytungphan@gmail.com Y!M: monitor_47@yahoo.com