15 mapes per explicar el món <a href="http://www.businessinsider.com/the-15-maps-that-explain-the-world-in-2012-2012-6#worldwide-oil-import-and-export-flows-saudi-arabia-is-the-biggest-hub-still-next-up-is-indonesia-1">http://www.businessinsider.com/the-15-maps-that-explain-the-world-in-2012-2012-6#worldwide-oil-import-and-export-flows-saudi-arabia-is-the-biggest-hub-still-next-up-is-indonesia-1</a><br>
<br>Raf<br>