Não informado. (1950). FAO forestry and forest products studies. Food and Agriculture Organization of the United Nations.
Chicago-referens (17:e uppl.)Não informado. FAO Forestry and Forest Products Studies. Rome: Food and Agriculture Organization of the United Nations, 1950.
MLA-referens (8:e uppl.)Não informado. FAO Forestry and Forest Products Studies. Food and Agriculture Organization of the United Nations, 1950.
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