Não informado. (1976). FAO trade yearbook. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Trade Yearbook. Rome: Food and Agriculture Organization of the United Nations, 1976.
MLA-referens (8:e uppl.)Não informado. FAO Trade Yearbook. Food and Agriculture Organization of the United Nations, 1976.
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