/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: wre30 https://cdn.slidesharecdn.com/profile-photo-wre30-48x48.jpg?cb=1523459975 طالب جامعي بورقلة Génie des Procédes Ouargla Ingénierie de gaz naturel