/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: TianusTarigan https://cdn.slidesharecdn.com/profile-photo-TianusTarigan-48x48.jpg?cb=1523142843 Hi, all My friends are on fcbook,, This world-added sophisti cated and advance course,, so my message was very clever to use it,,, okey,?? __________________________