Results 41 - 50 of 82

Scientist / Science / Technology

Meter top cut Netherlands 2009

NWO - Netherlands Organization for Scientific Research - ...

€ 7,50

Card / Postmark Belgium 1928

National fund scientific research

€ 7,50

Postal stationery Romania 1999

Albert Einstein - Emil Racovita

€ 7,50

Cover / Cachet Norway 1977

Geophysics Nordmeer - Meteorexpedition

€ 7,50

Meter cut France 1985

Scientific instruments - Metrastat - Heat stability

€ 7,50

Cover / Postmark USA 1979

Albert Einstein - Brien McMahon = Atoms for Peace

€ 7,50