Results 51 - 60 of 84

Scientist / Science / Technology

Cover / Postmark France 1956

Soil Science Congress

€ 5,00

Card / Postmark Belgium 1928

National fund scientific research

€ 7,50

Cover / Postmark France 1961

Week of the laboratory - Microscope

€ 5,00

Service cover Belgium 1916

Ministry of Science and Art - Censored - WWI

€ 15,00

Cover / Postmark Finland 1955

Johan Jakob Nervander - Meteorologist

€ 5,00

Postal stationery Romania 1999

Albert Einstein - Emil Racovita

€ 7,50

Maximum card France 1946

Science Exhibition - UNESCO - United Nations

€ 25,00

Maximum card Romania 1983

George Constantinescu - Scientist - Engineer - Inventor

€ 5,00

Receipt Netherlands Indies 1914

Royal Physicist Association

€ 20,00