ºÝºÝߣshows by User: ssusered4879 / http://www.slideshare.net/images/logo.gif ºÝºÝߣshows by User: ssusered4879 / ºÝºÝߣShare feed for ºÝºÝߣshows by User: ssusered4879 https://cdn.slidesharecdn.com/profile-photo-ssusered4879-48x48.jpg?cb=1523315560 مهندس بترولي