Economic impacts on the least developed countries of the elimination of import tariffs on their products

afrique du sud agricultural products agricultural sector appellation d'origine aranceles canada commodity markets designation of origin developing countries economic situation eua european union gravamen sobre las importaciones import levies importaciones importation imports japan japon less favoured areas market research produit agricole secteur agricole sector agrario south africa tarif douanier tariffs trade liberalization usa zonas desfavorecidas