Não informado. (1963). Bulletin of statistics on world trade in engineering products. United Nations, Economic Commission for Europe.
Citace podle Chicago (17th ed.)Não informado. Bulletin of Statistics on World Trade in Engineering Products. New York: United Nations, Economic Commission for Europe, 1963.
Citace podle MLA (8th ed.)Não informado. Bulletin of Statistics on World Trade in Engineering Products. United Nations, Economic Commission for Europe, 1963.
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