Long-term productivity and sustainability of crop-livestock systems through integrated soil fertility management
Contribution a l'étude des usages des sols des versants andins : Dans la cordillère centrale colombienne, Département du Cauca
Acercamiento a la situacion socioeconomica de las comunidades campesinas del Departamento de Sucre desde la perspectiva del Programa Yuquero
Farmer participation in research and extension: the key to achieving adoption of more sustainable cassava production on sloping land in Asia and their impact on farmers` income
