/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: bradycardiareceptor https://cdn.slidesharecdn.com/profile-photo-bradycardiareceptor-48x48.jpg?cb=1523351992 อย่า @ ถ้าไม่รู้จัà¸�