United Nations Conference on Trade and Development. (1974). The maritime transportation of iron ore: Report. United Nations.
Lua i Stíl Chicago (17ú heag.)United Nations Conference on Trade and Development. The Maritime Transportation of Iron Ore: Report. New York: United Nations, 1974.
Lua MLA (9ú heag.)United Nations Conference on Trade and Development. The Maritime Transportation of Iron Ore: Report. United Nations, 1974.
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