/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: ubaidbnr https://cdn.slidesharecdn.com/profile-photo-ubaidbnr-48x48.jpg?cb=1523553976 UBAID ULLAH BUNERI M.Sc PHYSICS, B.Ed UNIVERSITY OF PESHAWAR,PESHAWAR.