If the Eurozone breaks up, it's not going to be just Europe that suffers.

The world's poorest countries stand to lose some $30 billion in trade and investment if worse comes to worst in the Eurozone, according to a brief released Friday by the relief organization Oxfam.

The brief lists 48 countries, most of them in Africa, where export earnings would plunge and investment funds would likely dry up if Europe's troubled currency union were to dissolve.

Oxfam predicts food shortages and other economic calamities for these countries in the event of a Eurozone breakup, and recommends that if things go that way, the G20 coalition -- an international group of 20 finance ministers and central bank governors -- should impose a special tax on Europe to make up for the projected shortfall.