Agriculture - Documentation du cnd - Index retrospectif no 1, Oct 1969.

actividades cooperativas agricultural development agricultural economics agricultural products agricultural structure animal production commercialisation cooperative activities desarrollo forestal desarrollo rural forestry development formation gestion des eaux gestion du sol information processing manejo del suelo marketing mercadeo plant production procesamiento processing production animale produit agricole recherche research rural development soil management structure agricole training traitement traitement de l'information water management