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The physical dimension of international trade, part 2: Indirect global resource flows between 1962 and 2005
Dittrich, Monika, (2012)
The physical dimension of international trade: Part 1: Direct global flows between 1962 and 2005
Dittrich, Monika, (2010)
The physical dimension of international trade, part 2 : indirect global resource flows between 1962 and 2005