Herman Cudris Castañeda

Stamps Category Minerals Herman Cudris Castañeda

Germany Democratic Rep.-Proustit (Erzgebirge)- Mining Academy in Friberg.
Germany
50 Years of Fiscal Exploitation of Petroleum 1907-1957
Argentina
Orinoco Steel Plant - First Steel Cast
Venezuela
1976 First Anniversary of the Nationalization of Iron
Venezuela
Platinum Producer - Department of CHocó
Colombia
Gold Washing Machine- Gold Mining- Department of Nariño
Colombia