/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: kgsRamadhan https://cdn.slidesharecdn.com/profile-photo-kgsRamadhan-48x48.jpg?cb=1567287993 20 years old | Student | Department of Mining Enginerring | University of Sriwijaya | Palembang, South Sumatra | Indonesia rustandiramadhan.wordpress.com