Não informado. (1961). FAO commodity review and outlook. Food and Agriculture Organization of the United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. FAO Commodity Review and Outlook. Rome: Food and Agriculture Organization of the United Nations, 1961.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. FAO Commodity Review and Outlook. Food and Agriculture Organization of the United Nations, 1961.
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