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• Precio agr?cola
• Producto b?sico
  As opposed to semi-manufactured or finished products; materials in their original state, or processed only enough to be prepared for marketing in international trade.
• Relaci?n de intercambio
  The ratio of export to import prices of the products involved in a given country or region's international trade. May also be used by extension with respect to trade between areas within a country, such as urban or rural areas.