Stamps Category Economy

machinery- Friedrich Koemig
carlos ródenas ferré
Productivity - Grain Harvesting Machine.
Herman Cudris Castañeda
Paper Industry - Wood Transformation
Herman Cudris Castañeda
Natural Wool
Miguel Rodríguez López
Natural Wool
Miguel Rodríguez López
Emerald mines
Miguel Rodríguez López
Oil Drilling.
Herman Cudris Castañeda
Edifil
Miguel Rodríguez López
hydroelectric power
carlos ródenas ferré
fruit growing
Nelida Fernandez Besada