F. Rathgen has written:
'The preservation of antiquities'
Friedrich Rathgen has written: 'Verwitterung und Erhaltung von Werksteinen' -- subject(s): Building stones, Testing
Friedrich Rathgen died in 1942.
Friedrich Rathgen was born in 1862.
Karl Rathgen was born in 1856.
Karl Rathgen died in 1921.
Rathgen Research Laboratory was created on 1888-04-01.
F F. Davitaya has written: 'Soviet Georgia'
A. F. Dimmock has written: 'Tommy'
A. F. Webling has written: 'Risby'
F. Kiamenga has written: 'Makuta'
I. F. Galwey has written: 'Hybrasil'
F. Engel has written: 'Peru'