Stamps Category Economy

2 million
Nelida Fernandez Besada
EXCAVATIONS
carlos ródenas ferré
Wormser reichstag von 1495 - Diet of Worms (1495)
Nelida Fernandez Besada
Rationnelle energie anwendung - Rational use of high potential energies
Nelida Fernandez Besada
Dynamo elektrisches prinz - Dynamo electric principle
Nelida Fernandez Besada
Verbrennungs engine - internal combustion engine
Nelida Fernandez Besada
Figures.
Herman Cudris Castañeda
Druckmaschine
Nelida Fernandez Besada
Rig
Nelida Fernandez Besada
"backhoe"
Nelida Fernandez Besada