/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: ViruzSRezpector https://cdn.slidesharecdn.com/profile-photo-ViruzSRezpector-48x48.jpg?cb=1652969873 ilmu pengtahuan adalah mata uang yang berharga di mana-mana