/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: tasriefsurungan https://cdn.slidesharecdn.com/profile-photo-tasriefsurungan-48x48.jpg?cb=1659586330 Lecturer, Department of Physics, Hasanuddin Univ. Makassar, 90245, Indonesia