/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssuseraaf66c https://cdn.slidesharecdn.com/profile-photo-ssuseraaf66c-48x48.jpg?cb=1523619864 ึϸµà¸¡à¸²à¸�