Structure of world trade of between 28 OECD countries in 1992. The size of the nodes gives the volume of flows  in dollars (imports and exports) for each country . The size of the links stands for the volume of trade between any two countries. Colors give the regional respectively memberships in different trade organisations: EC countries (yellow), EFTA countries (green), USA and Canada (blue), Japan (red), East Asian Countries (pink), Oceania (Australia , New Zealand) (black).  From Max Planck Institute for the Study of Societies.
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