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Causes 1 Petroleum industry and trade-military aspects 1 Petroleum industry and trade-political aspects 1 World War, 1939-1945 -- 1 World politics -- World war -- 1
Causes 1 Petroleum industry and trade-military aspects 1 Petroleum industry and trade-political aspects 1 World War, 1939-1945 -- 1 World politics -- World war -- 1
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