/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ijssnn https://cdn.slidesharecdn.com/profile-photo-ijssnn-48x48.jpg?cb=1523655230 ดร. สุปราณี งามประสิทธื์ Dr. Supranee Ngamprasitthi