International Development Research Center. Agriculture. Food and Nutrition Sciences Division. (1988). Crop and animal production systems program. International Development Research Centre.
Citace podle Chicago (17th ed.)International Development Research Center. Agriculture. Food and Nutrition Sciences Division. Crop and Animal Production Systems Program. Ottawa, Ont: International Development Research Centre, 1988.
Citace podle MLA (9th ed.)International Development Research Center. Agriculture. Food and Nutrition Sciences Division. Crop and Animal Production Systems Program. International Development Research Centre, 1988.
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