International Monetary Fund. (1989). World Economic and Financial Surveys, Primary Commoditie, 1989: Primary Commodities. International Monetary Fund.
Chicago Style aipamenaInternational Monetary Fund. World Economic and Financial Surveys, Primary Commoditie, 1989: Primary Commodities. Washington, D.C.: International Monetary Fund, 1989.
MLA aipamenaInternational Monetary Fund. World Economic and Financial Surveys, Primary Commoditie, 1989: Primary Commodities. International Monetary Fund, 1989.
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