/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: fotoudap https://cdn.slidesharecdn.com/profile-photo-fotoudap-48x48.jpg?cb=1523503913 ǧÀï¤ÎµÀ¤âÒ»ši¤«¤é£¡ The journey of a thousand miles begins with a single step.