Dyfyniad APA

Food and Agriculture Organization of the United Nations. (1983). FAO fertilizer yearbook 1982. Food and Agriculture Organization of the United Nations.

Dyfyniad Arddull Chicago

Food and Agriculture Organization of the United Nations. FAO Fertilizer Yearbook 1982. Rome: Food and Agriculture Organization of the United Nations, 1983.

Dyfyniad MLA

Food and Agriculture Organization of the United Nations. FAO Fertilizer Yearbook 1982. Food and Agriculture Organization of the United Nations, 1983.

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