Stamps Category Minerals

MINERALS FROM SPAIN- ARAGONITE (14)
carlos ródenas ferré
Copper Extraction
Francisco Minguez
Mineral-tourmaline
carlos ródenas ferré
MINERALS.
Herberth Sierra Licona
Orinoco Steel Plant - First Steel Cast
Herman Cudris Castañeda
Sandstone
Francisco Minguez
Scott 203. Copper mine.
Juan Carlos Silva
1976 First Anniversary of the Nationalization of Iron
Herman Cudris Castañeda
MINERALS FROM SPAIN- DOLOMITE (9)
carlos ródenas ferré
2460 Wieliczka Salt Flats
Miguel Angel Sancho