/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: nongmaijang https://cdn.slidesharecdn.com/profile-photo-nongmaijang-48x48.jpg?cb=1523185520 à¸È¨¸¹à¹‹à¹„หมครุศาสตร์