/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: lequangvinh2512 https://cdn.slidesharecdn.com/profile-photo-lequangvinh2512-48x48.jpg?cb=1724505410 Kỹ sÆ° Viễn Thông