Hänvisningar gällande denna post
APA-referensUnited Nations. (1971). The coal situation in Europe in 1970 and its prospects. United Nations.
Chicago-stil citatUnited Nations. The Coal Situation in Europe in 1970 and Its Prospects. New York: United Nations, 1971.
MLA-referensUnited Nations. The Coal Situation in Europe in 1970 and Its Prospects. United Nations, 1971.
Harvard-stil citatUnited Nations. 1971. The coal situation in Europe in 1970 and its prospects. New York: United Nations.
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