/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: pdurben https://cdn.slidesharecdn.com/profile-photo-pdurben-48x48.jpg?cb=1554277909 ²µÃ¶³Ù³Ù±ô¾±³¦³ó.