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Sumber gambar: http://www.sciencephoto.com/image/225336/530wm/H4070136-US_physicist_Sheldon_Glashow_giving_a_lecture-SPL.jpg
Sumber gambar: http://www.sciencephoto.com/image/225336/530wm/H4070136-US_physicist_Sheldon_Glashow_giving_a_lecture-SPL.jpg
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