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Some issues in farming systems research CATIE's experience in the Central American Isthmus
(CATIE, Turrialba (Costa Rica). Programa Cultivos Anuales, 1980)
CATIE's small farmers oriented agricultural research effort in the Central American Isthmus.
(Centro Agronómico Tropical de Investigación y Enseñanza, Turrialba (Costa Rica)., 1980)