Não informado. (2021). Annual Bulletin of Steel Statistics for Europe, America and Asia. United Nations.
Citace podle Chicago (17th ed.)Não informado. Annual Bulletin of Steel Statistics for Europe, America and Asia. New York: United Nations, 2021.
Citace podle MLA (8th ed.)Não informado. Annual Bulletin of Steel Statistics for Europe, America and Asia. United Nations, 2021.
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