Não informado. (2009). FAO Statistical Yearbook. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Statistical Yearbook. Rome: Food and Agriculture Organization of the United Nations, 2009.
MLA-referens (8:e uppl.)Não informado. FAO Statistical Yearbook. Food and Agriculture Organization of the United Nations, 2009.
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