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Ítem Plant Genetic Resources Newsletter: No. 94/95, June/September 1993International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem Plant Genetic Resources Newsletter: No. 93, March 1993International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem Plant Genetic Resources Newsletter: No. 45, April 1981International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem Plant Genetic Resources Newsletter: No. 33, February 1978International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem IBPGR annual report 1979International Board for Plant Genetic ResourcesÍtem Plant Genetic Resources Newsletter: No. 66, June 1986International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem IBPGR annual report 1990International Board for Plant Genetic ResourcesÍtem IBPGR annual report 1992International Board for Plant Genetic ResourcesÍtem Plant Genetic Resources Newsletter: No. 44, December 1980International Board for Plant Genetic Resources; Food and Agriculture Organization of the United NationsÍtem Plant Genetic Resources Newsletter: No. 92, September/December 1992International Board for Plant Genetic Resources; Food and Agriculture Organization of the United Nations