Dyfyniad APA

United Nations Industrial Development Organization. (1977). Information sources on the iron and steel industry. United Nations.

Dyfyniad Arddull Chicago

United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. New York: United Nations, 1977.

Dyfyniad MLA

United Nations Industrial Development Organization. Information Sources on the Iron and Steel Industry. United Nations, 1977.

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